1. Faculty of Medicine, Sumy State University , Sumy 40007, Ukraine
2. Faculty of Medicine, University of Ghana Medical School , Accra 4236, Ghana
3. Faculty of Medicine and Health Sciences , 43400 UPM Serdang, Selangor Darul Ehsan, Malaysia
4. Cardiff University School of Medicine, Cardiff University , Cardiff CF14 4XN, Wales, United Kingdom
5. Faculty of Medicine, King Edward Medical University , Nelagumbad, Anarkali, Lahore 54000, Pakistan
6. Faculty of Basic Medical Sciences , Ilorin 1515, Nigeria
7. Cerrahpasa School of Medicine, Istanbul University Cerrahpasa , Istanbul 34320, Turkey
8. Department of Surgery II, University Hospital Witten-Herdecke, University of Witten-Herdecke , Wuppertal 42283, Germany