1. Sumy State University, Sumy, Ukraine
2. University of Ghana Medical School, Accra, Ghana
3. Faculty of Medicine and Health Sciences, University of Putra Malaysia, Serdang, Malaysia
4. Norwich Medical School, University of East Anglia, Norwich, UK
5. Rowan University School of Osteopathic Medicine, Stratford, New Jersey, USA
6. Department of General Surgery, Istanbul Medeniyet University, Istanbul, Turkey