1. Department of Surgery, Faculty of Medicine, The Hashemite University, Zarqa 13133, Jordan
2. Medical Research Group of Egypt (MRGE), Cairo 11511, Egypt
3. Department of Surgery, Faculty of Medicine, Elrazi University, Khartoum 1115, Sudan
4. Department of Surgery, Faculty of Medicine, Assiut University, Assiut 71515, Egypt
5. Department of Dermatology, Faculty of Medicine, Grigore T. Popa University of Medicine and Pharmacy, 700115 Lasi, Romania
6. Department of Surgery, Faculty of Medicine, Al-Azhar University, Cairo 11651, Egypt
7. Department of Internship, Kuwait Institute for Medical Specializations (KIMS), Kuwait City 13109, Kuwait
8. Department of Surgery, Faculty of Medicine, Zagazig University, Zagazig 44519, Egypt
9. Department of Global Health, Harvard Medical School, Boston, MA 02115, USA