Beste CT (Computertomographie) Kardiologen in der Türkei - TOP -296 Ärzte

Objective:
To utilize my expertise in Pediatric Orthopedics, Hand Surgery, Arthroplasty, and Trauma within a progressive medical institution, contributing to patient care, research, and academic development.

Work Experience:

Şırnak State Hospital, Orthopedics and Traumatology Specialist
March 2022 - Present

• Lead orthopedic surgeon specializing in pediatric orthopedics, hand surgery, arthroplasty, and trauma.
• Conducting surgical interventions, consultations, and post-operative care for patients with diverse orthopedic conditions.
• Collaborating closely with multidisciplinary teams to devise and implement comprehensive treatment plans.
• Actively participating in hospital rounds, conferences, and educational initiatives.

İstanbul Şişli Etfal Training and Research Hospital, Orthopedics and Traumatology Residency
July 2017 - February 2022

• Completed a rigorous residency program focused on orthopedic surgery and traumatology.
• Rotated through various subspecialties including pediatric orthopedics, hand surgery, and arthroplasty.
• Assisted in surgical procedures, outpatient clinics, and emergency consultations.

Education:

İstanbul Şişli Etfal Training and Research Hospital, Orthopedics and Traumatology Residency
2017-2022

• Residency training program specializing in orthopedic surgery and traumatology.

Trakya University, Orthopedics and Traumatology Residency
2016-2017

• One-year residency program focusing on orthopedic surgery and traumatology.

Gaziantep University, Faculty of Medicine
2009-2016

• Doctor of Medicine (MD) degree.

İçel Anatolian High School
2005-2009

• High School Diploma.

Professional Memberships:

• Turkish Society of Orthopedics and Traumatology (TOTBİD)
• Turkish Orthopedic and Traumatology Institute (TOTDER)
• Turkish Society of Sports Traumatology, Arthroscopy, and Knee Surgery (TUSYAD)

Skills:

• Proficient in diagnosing and treating orthopedic conditions in both pediatric and adult patients.
• Skilled in performing various orthopedic surgeries including arthroplasty, hand surgery, and trauma procedures.
• Strong interdisciplinary collaboration and communication skills.
• Committed to continuous professional development and continuing medical education.

Assoc. Prof. Ozgur Cicekli

Education :

Bachelor's Degree: 1998-2005 - School Of Medicine (english), Hacettepe University
Residency Education Ankara Atatürk Educatıon And Research Hospital
2005 – 2010 - Orthopedıcs And Traumatology Clınıc
Title Of Associate Professor: 2019 Sakarya Unıversıty Educatıon And Research Hospıtal

Biography :

2005 – 2010 - Resıdency, Atatürk Teaching And Research Hospital, Ankara
2011-2012 – Mılıtary Servıce, Samsun Mılıtary Hospıtal
2012 – 2015 – Conscrıptıon, Şanlıurfa Mehmet Akif Inan Educatıon And Research Hospıtal
2015-2020 Ministry Of Health Sakarya University Training And Research Hospital
2020 – Adatip Sakarya Hospital

Area of Specialty :

Areas Of Focus
Sports Injuries And Surgeries
Joint Preserving Surgery
Arthroplasty
Orthopedic Traumatology

Memberships :

1. 2018, Member, Turkish Society Of Sports Injuries, Arthroscopy And Knee Surgery
2. 2014, Memberi Turkish Orthopedics And Traumatology Training Council (totek)
3. 2012, Member, Federation Of Turkish Society Of Orthopedics And Traumatology (totbid)

Congress :

Letters/articles/publications
A. Articles Published In International Peer-review Journals:
A.1 Çiçekli Özgür, Dogan Metin (2018). Evaluation Of Surgical Outcome In Advanced Age Patients With Developmental Hip Dysplasia. International Journal Of Surgery, 52, 44-49., Doi:
10.1016/j.ijsu.2015.02.020, (control No: 4920803)
A.2 Çiçekli Özgür,topçu Hüseyin Nevzat,kochai Alauddin,sükür Erhan,türker Mehmet
(2019). Comparison Of Suprapatellar And Infrapatellar Tibial Nailing: More Anatomic Entry Point And
Fracturereduction Via The Suprapatellar Approach. International Journal Of Clinical And Experimental
Medicine, 12(1), 804-811., Doi: Ijcem0082501, (control No: 4840087)
A.3 Çiçekli Özgür,özdemir Güzelali,uysal Mustafa,biçici Vedat,bingöl Izzet (2016).
Percutaneous Cannulated Screw Fixation For Pediatric Epiphyseal Ankle Fractures. Springerplus,
5, (1) Doi: 10.1186/s40064-016-3623-1, (control No: 4920888)
A.4 Çiçekli Özgür,kochai Alauddin,sükür Erhan,basak Ali Murat,kurtoglu Alper,türkermehmet (2019). Suprapatellar Approach For Fractures Of The Tibia: Does The Fracture Level Matter?.
Joint Diseases And Related Surgery, 30(1), 10-16., Doi:
10.5606/ehc.2019.63487, (control No: 4919692)
A.5 Çiçekli Özgür, Bingöl Izzet,tepe Nermin,akgül Turgut,çiçekli Esen, Atbinici
Hasan,arslan Arslan Kagan (2016). Neuromuscular Functional Changes Of The Quadriceps After Acl Reconstruction. West Indian Medical Journal, Doi: 10.7727/wimj.2015.558,
(control No: 4892448)
A.6 Özdemir Güzelali, Çiçekli Özgür, Akgül Turgut, Zehir Sinan, Ferit Yücel, Eskin Deniz
(2014). The Results Of Autologous Bone Graft And Titanium Headless Cannulated Compression Screw For Treatment Of Scaphoid Nonunion. Turkish Journal Of Trauma And Emergency Surgery, 20(3),
199-204., Doi: 10.5505/tjtes.2014.92255, (control No: 4866486)
A.7 Özdemir Güzelali, Akgül Turgut, Çiçekli Özgür, Yilmaz Baris, Atbinici Hasan, Yücel Ferit (2017). Lunatum Excision And Scaphocapitate Arthrodesis In Kienböck's Disease. Journal Of Orthopaedic Surgery, 25(1), Doi: 10.1177/2309499017692704, (control No: 4866032)
A.8 Kochai Alauddin, Türker Mehmet, Çiçekli Özgür, Özdemir Ugur, Bayam
Levent, Erkorkmaz Ünal, Sükür Erhan (2018). A Comparative Study Of Three Commonly Used Fixation Techniques For Isolated Medial Malleolus Fracture. Joint Diseases And Related Surgery,
29(2), 104-109., Doi: 10.5606/ehc.2018.61449, (control No: 4866101)
A.9 Sükür Erhan, Akar Abdülhalim, Topçu Hüseyin Nevzat, Çiçekli Özgür, Kochai
Alauddin, Türker Mehmet (2018). The Effect Of N-acetylcysteine On Mechanical Fatigue Resistance Of Antibiotic-loaded Bone Cement. Journal Of Orthopaedic Surgery And Research, 13,
Doi: 10.1186/s13018-018-0843-9, (control No: 4866136)
A.10 Akgül Turgut, Zehir Sinan, Özdemir Güzelali, Yücel Ferit, Türk Abdulkadir, Çiçekli
Özgür (2014). The Results Of Low Profile Locking Anatomical Plate Application For The Treatment Of Edinburg Type 2 Clavicle Diaphysis Fractures. Turkish Journal Of Trauma And Emergency Surgery, 20(4), 286-290., Doi: 10.5505/tjtes.2014.88303, (control No: 4866478)
A.11 Sükür Erhan, Akar Abdülhalim, Uyar Ahmet Çagri, Çiçekli Özgür, Kochai
Alauddin, Türker Mehmet, Topçu Hüseyin Nevzat (2018). Vacuum-assisted Closure Versus Moist Dressings In The Treatment Of Diabetic Wound Ulcers After Partial Foot Amputation: A
Retrospective Analysis In 65 Patients. Journal Of Orthopaedic Surgery, 26(3), Doi:
10.1177/2309499018799769, (control No: 4866083)
A.12 Yalçin Muhammed Nadir, Bektaser Süleyman Bülent, Çiçekli Özgür, Dogan Metin
(2009). Bucket-handle Tear Of A Discoid Lateral Meniscus In A 6-year-old Girl. Acta Orthopaedica Et
Traumatologica Turcica, 43(6), 528-531., Doi: 10.3944/aott.2009.528, (control No: 4866457)
A.13 Yalçin Muhammed Nadir, Bektaser Süleyman Bülent, Çiçekli Özgür, Ugras
Serdar, Dogan Metin (2010). An Unusual Cause Of Recurrent Joint Effusions: Nonhemophilic
Hemosiderotic Synovitis Of The Knee. Acta Orthopaedica Et Traumatologica Turcica, 44(2), 162-
165, Doi: 10.3944/aott.2010.2240, (control No: 4866450)
B. Articles Published At Local Peer-review Journals:

B.1 Çiçekli Özgür (2019). Does Sleep Disturbance And Quality Of Life Improve After Arthroscopic Rotator Cuff Repair?. Annals Of Medical Research, 26(4), 664-669., Doi:
10.5455/annalsmedres.2019.01.049, (control No: 4892204)
B.2 Sükür Erhan, Uyar Ahmet Çagri, Özdemir Ugur, Gökçen Hüseyin Bahadir, Çiçekli
Özgür, Topçu Hüseyin Nevzat (2018). Assessment Of Concordance Between Age Group And Etiology, Level And Revisions Of Amputations. Medeniyet Medical Journal, 33(1), 10-16., Doi:10.5222/mmj.2018.35002,

Certificate
Turkish Society Of Orthopedics And Traumatology-turksih Council Of Orthopedics And Traumatology Educaiton Board Test, Orthopedics And Traumatology Qualification Test, 2014, Ankara, Certificate,
14.09.2014 -26.10.2014 (national)

Course
Nice Shoulder Course, Shoulder Course, Covering Arthroscopic And Prosthetic Surgery. The Program Includes Lectures By Leading Shoulder Surgeons, Round Table Discussions, A Live Surgery Session And Workshops With Cadavers And Plastic Models., Nice, Course, 02.06.2016 -04.06.2016 (international)
2.
Ao Trauma Course- Advanced Principles Of Fracture Management, Ao Trauma Course- Advanced
Principles Of Fracture Management, Ankara, Course, 17.01.2015 -20.01.2015 (national)
3.
Ao Trauma Courses- Foot Ankle, Ao Trauma Courses- Foot Ankle Surgery, Graz, Kurs, 17.09.2014 -
19.09.2014 (international)
4.
Epos-bat Advanced Course, Current Concepts In The Management Of Pediatric Hip Disorders., Izmir,
Course, 06.09.2013 -07.09.2013 (international)
5.
Gazi Shoulder Arthroscopy Course, Shouler Arthroscopy Course, Ankara, Gazi University Hospital, Course
04.01.2013 05.01.2013 (national)
6.
Fracture Management During The Growth, Fracture Management During The Growth, Ao Trauma Courses, Graz, Course, 12.09.2010 -12.09.2010 (international)
7.
Ao Trauma Course Approach And Osteosynthesis, Ao Trauma Course Approach And Osteosynthesis (with Cadaver Dissections), Graz, Course, 08.09.2010 -12.09.2010 (international)
8.
Introductory Course With Cadaver Dissections, Introductory Course With Cadaver Dissections For Ao Travma-course Approaches And Osteosynthesis, Graz, Course, 07.09.2010 -07.09.2010 (international)
9.
Ao Trauma Course-principles In Operative Fracture Management, Ao Trauma Course-principles In Operative Fracture Management, Ankara, Course, 15.01.2010 -19.01.2010 (national)
10.
Ao Pediatric Trauma Course, Ao Pediatric Trauma Course, Izmir, Course, 18.04.2009 -19.04.2009 (national)
11.
2. Intramedular Nailing Course, Intramedular Nailing Course, 2009, İzmir, Course, 15.01.2009
18.01.2009 (national)
12.
Basic Sciences And Research School, Turkish Society Of Orthopedics And Traumatology-turksih Council Of Orthopedics And Traumatology Educaiton Orthopedics And Traumatology Basic Sciences And Research School, Turkish Society Of Orthopedics And Traumatology-turksih Council Of Orthopedics And Traumatology Educaiton Erzurum, Course, 27.02.2008-01.03.2008 (national)

Education

• Ege Faculty of Medicine 1978
• Specialization in Pediatrics 1982
• Subspecialty Pediatric Oncology 2002 (EU Faculty of Medicine)
• Pediatric Hematology and Oncology 2012 (EU Faculty of Medicine)
• Deputy Chief of Clinic 1988 Tepecik EAH
• Clinical Chief 1993 Tepecik EAH
• Associate Professorship 1995
• Professorship  2002
• Ege U. Faculty of Medicine, faculty member 1998 – 2022
• EU Faculty of Medicine Department of Pediatrics 2009-2018
• Member of Tepecik Education Planning and Coordination Board (1993-1998)
• SSI Tepecik Hospital Ethics Committee Chairman (1996-1998)
• Turkish Society of Pediatric Hematology "Bone Marrow Transplantation Working Group Co-Chair" (2002-2006)
• Turkish Society of Pediatric Hematology "Bone Marrow Transplantation Working Group" (2006-2008)
• Turkish Society of Pediatric Hematology - Responsible for Bone Marrow Transplantation "Online" Data Registry System 2007-ongoing.
• Ege University Regenerative Medicine and Stem Cell Commission Chairman, 2011-2021

Institutional Memberships

• Turkish Medical Association İzmir and Kocaeli Branch
• Turkish National Pediatric Association - İzmir
• European Group for Bone Marrow Transplantation (EBMT); Ege University Pediatric Bone Marrow Transplantation Unit was accredited by the European Group for Bone Marrow Transplantation (EBMT) in June 2007.
• Turkish Society of Pediatric Hematology - Board Member for two terms (2005-2009)
• Turkish Society of Hematology - Board Member for two terms (2001/2005)
• Turkish Pediatric Oncology Association
• Bone Marrow Transplantation Foundation (KITVAK) Member of the Board of Trustees

Units he is the founder of                        

1- SSI Tepecik Hospital Pediatric Oncology Clinic (1990) 
2- SSI Tepecik Hospital Pediatric Bone Marrow Transplantation Unit (1992) 
3- EU Faculty of Medicine Pediatric Bone Marrow Transplantation Unit (1998) 
4- FOUNDER of JOURNAL OF PEDIATRIC RESEARCH, 2014; SCI application was made in 2022.  

Transplantation units that he contributed to the establishment of                        

1. İzmir BUÇH EAH Pediatric Bone Marrow Transplantation Unit (2019) 
2. Ümraniye EAH Pediatric Bone Marrow Transplantation Unit (2020) 
3. Kanuni Sultan Süleyman EAH Pediatric Bone Marrow Transplantation Unit (2020) (Transferred to Çam Sakura EAH)

Awards

• Thrombotic parameters in bone marrow stem cell transplant patients, Pediatric Hematology Congress, Trabzon 2003
• CD133 Antigen in Stem Cell: Pediatric Hematology Congress 2005. Research award
• The role of Toll like receptors in febrile neutropenic patients, Best poster award. Turkish Hematology Congress 2008, Çeşme-İzmir
• National pediatric stem cell transplantation activity- Oral presentation second prize, Turkish Hematology Society Stem Cell Transplantation Congress, 2022, Antalya

Publications

Kansoy S. "Bone Marrow and Stem Cell Transplantation Child Health and Diseases, 1st edition, EU Faculty of Medicine Printing House, 1999, İzmir

Kansoy S. Bone marrow transplantation in Thalassemia Major III. Aegean Thalassemia Days Book, 2000, Izmir

Kansoy S. Pediatric KIT Center Standards in Turkey. Childhood Acute Leukemias, Antalya 2000: 73-5

Kansoy S. Late Side Effects in Children. Special issue of Bone Marrow Transplantation Journal of Turkish Clinics. 2003

Kansoy S. Stem Cell Applications in Bone Marrow and Stem Cell Transplantation. Pediatric Oncology Nursing Course Book, İzmir, 2005

Kansoy S. Cord Blood as a Stem Cell Source. Stem Cell Special Issue. Turkey Clinics, 2008

Kansoy S. Stem Cell Transplantation in Lymphomas. General Pediatrics Book, Ed. Prof.Dr.Enver Hasanoglu, 2009

Kansoy S, Aksoylar S. Bone Marrow Transplantation in Children. Pediatrics, 2014 and 2017

Kansoy S. Rhabdomyosarcoma. Pediatrics, 2014 and 2017

Kansoy S. Approach to the child with cancer according to clinical findings. Pediatrics, 2014 and 2017 

11. Çetingül N, S.Kansoy, M.Kantar. Oncological Diseases. Pediatrics (Ed. A. Cura), 641-672, Ege University Print house, İzmir, 1999.  (1.05 points)

Kansoy S, M.Kantar. Head, Face and Eye Examination. Pediatric Prosthetic Physical Examination and Symptom Information (Ed. A.Cura)

Kantar M. Metabolic Emergency Problems in Oncology. Oncologic Emergencies and Supportive Care in Childhood (Ed. N. Çetingül, S. Kansoy), 15-24, Meta Basım, İzmir, 2003. 

Cord Blood Transplants in Turkey. HEMATOLOGIST, 2016

Kansoy S. Central Nervous System Tumors in Children Pediatrics, 2014 and 2017

Acute myeloblastic leukemia in children and its treatment. Pediatric Oncology Textbook, Poplack's Turkish, 2020

National pediatric stem cell transplant activity, 2020

Childhood stem cell transplantation indications, Turkey Clinics - International book 2020

In addition to the studies and papers in international journals published in large numbers, he is involved in international multicenter studies in some journals with high impact value.

Dr. Nuri Ceydeli ist Gynäkologe und Geburtshelfer mit über 15 Jahren Erfahrung. Er ist Absolvent der Istanbul University Istanbul Medical School (1995) und der Istanbul University Cerrahpaşa Medical School (2002) und Mitglied der Turkish Gynecology and Obstetrics Society, der Turkish Gynecologic Oncology Society, der Surgical Infection Association und der AAGL.

Prof. Haluk Duman ist ein erfahrener plastischer Chirurg mit über 35 Jahren Erfahrung in Istanbul, Türkei. Er ist spezialisiert auf plastische Chirurgie nach Krebs, Verbrennungen und Hauttumoren sowie Hand- und Kieferchirurgie. Er hat einen Abschluss in Allgemeinmedizin von der Medizinischen Fakultät der Universität Istanbul und eine Spezialisierung auf plastische und rekonstruktive Chirurgie von der Ankara GATA Medical School sowie ein Stipendium des MD Anderson Cancer Center der Universität von Texas. Prof. Duman hat über 60 Artikel veröffentlicht und an über 100 Konferenzen teilgenommen. Er ist Mitglied in verschiedenen Organisationen.

A graduate of Marmara University Faculty of Medicine (Ing), one of the most established educational institutions of our country, Op.Dr. Yusuf BAYRAM completed his specialty education at the Department of Orthopedics and Traumatology of Umraniye Training and Research Hospital of Health Sciences University in Istanbul.

It successfully performs arthroscopic (closed) knee, shoulder and ankle surgeries; general orthopedic applications other than Knee, Shoulder and Hip replacements and all orthopedic trauma surgeries.

He is particularly interested in the diagnosis, treatment and surgery of spinal diseases (Scoliosis, Kyphosis, Spinal fractures, Herniated disc, Slipped waist, Canal stenosis, etc.). It applies current treatment methods safely thanks to experience, knowledge and modern technology.

With more than 1000 surgeries performed so far, he continues his surgical life intensively thanks to positive feedback from patients and his energy.

MEDICAL INTEREST

Spinal Surgery

Arthroscopic (Closed) Knee, Shoulder and Ankle Surgery

Knee, Hip and Shoulder Replacement Surgery

All Orthopedic Traumas

Deformity Surgery

Associate Professor Haluk Celik ist ein türkischer orthopädischer Chirurg mit langjähriger Erfahrung in Knie-, Hüft- und Schulterchirurgie, Sportverletzungen, Knorpelchirurgie und regenerativen Behandlungen. Er hat ein Qualifikationszertifikat in Orthopädie und Traumatologie und ist Mitglied des Türkischen Bildungsrates für Orthopädie und Traumatologie. Er ist aktives Mitglied der türkischen Verbände für Sportverletzungen, Arthroskopie und Kniechirurgie und der türkischen Verbände für Schulter- und Ellenbogenchirurgie.

Op. Dr. Merve Karlı has completed her medical education at Eskişehir Osmangazi University Faculty of Medicine, Bakırköy. She received her specialist training at Sadi Konuk Training and Research Hospital.

She has performed over 1000 operations in the fields of benign anorectal diseases, laparoscopic / open hernia surgery, breast diseases, trauma and emergency surgery. She has certifications on endoscopic procedures.

MEDICAL INTERESTS

• Breast Diseases
• Benign Anorectal Diseases
• Laparoscopic and Open Hernia Surgery
• Endoscopy (Gastroscopy, Colonoscopy, PEG Insertion)

Assoc. Prof. Dr. Oğuzhan BABACAN completed his undergraduate, specialty and sub-specialty education at GATA Military Medical Faculty/Ankara. After becoming a specialist in Pediatrics, he worked in the field of Social Pediatrics for two years, where Healthy Baby Monitoring and vaccine follow-up were carried out. Then, she completed her subspecialty training in Pediatric Hematology and Oncology and continued her studies in the field of pediatric blood and cancer diseases. In addition to the treatment of children suffering from leukemia, lymphoma, solid tumors and other blood diseases, she has been working in the Bone Marrow Transplantation (Transplant) Unit for 13 years in Allogeneic (unrelated and intrafamilial), Autologous (from the patient himself) and Haploidentical (partially HLA compatible) hematopoietic stem cell transplantation. In 2018, he received the title of Associate Professor in the field of Pediatric Hematology and Oncology Science/Art.

MEDICAL AREAS OF INTEREST

Healthy baby follow-up and vaccinations

Lymph node enlargement

Pediatric patients with anemia (anemia)

Leukemia

Lymphoma

Bone Marrow Transplant

ITP

Thalassemias

Hemophiliacs

Solid tumors

Hemangioma

Childhood blood disorders

Children with frequent infections

Fever of unknown origin

Malnutrition in children

Dr. İdris AVCI was born in Ordu in 1988. After primary and high school education in Germany, he graduated from Yeditepe Faculty of Medicine in 2014. In 2020, he became a specialist in Brain and Nerve Surgery from Health Sciences University Prof. Dr. Cemil Taşçıoğlu City Hospital (Okmeydanı Training and Research Hospital). In 2022, he received "Fundamental Neuroscience and Neuroimaging" education at John Hopkins University, USA. In 2023, he completed his Health Tourism Certification from Sakarya University of Applied Sciences. In the same year, he was certified as a football physician by FIFA. In 2020-2022, he worked at Şanlıurfa Mehmet Akif İnan Training and Research Hospital Neurosurgery Clinic and worked as a clinical chief. Between 2022-2024, he worked in the Spine Center at Memorial Hospitals Group. Since 2023, he has been working at Üsküdar University as a Dr. He continues in the academic staff as an Education Officer. Since 2024, he has been working at NP Brain Hospital Neurosurgery Clinic.

Dr. İdris AVCI has worked in many clinics such as Germany, the Netherlands, Slovenia and has taken part in dozens of scientific meetings both in Turkey and abroad as a participant, speaker and organizer.

He has published in many international and domestic scientific journals. He has academic book chapters and editorials published by distinguished bookstores.

License
Faculty of Medicine
Ataturk University
1985-1991

Master's Degree
Faculty of Medicine
Ataturk University
1985-1991

Doctorate / Proficiency / Medical Specialization
Child Health and Diseases
Fatih University
1997-2001

Subspecialization
Child Neurology
Centenary Year University
2003-2007

Assoc. Prof. Dr.
Child Neurology
Mustafa Kemal University, Faculty of Medicine
2010-2013

Assoc. Prof. Dr.
Child Neurology
Yildirim Beyazit University, Faculty of Medicine
2013-2016

Op. Dr. Kemal Paksoy was born in Trabzon in 1982. In 2007, he graduated from Karadeniz Technical University Faculty of Medicine. In 2014, he completed his specialty training at Ondokuz Mayıs University Faculty of Medicine, Department of Neurosurgery. Between 2014-2018, he worked at Rize Kaçkar State Hospital Neurosurgery Clinic. Between 2018 and 2024, he worked at Memorial Hospitals Group Spine Center. Since 2023, he has been a member of the academic staff as Dr. Faculty Member at Üsküdar University Faculty of Medicine. Since 2024, he has been working at NPISTANBUL Brain Hospital Neurosurgery Clinic.

Dr. Kemal Paksoy has also worked in many clinics in the fields of neuromodulation and algology and has participated as a participant, speaker and organizer in dozens of scientific meetings held in Turkey and abroad.

He has published in many international and national scientific journals.