1. Faculty of Medicine, Alexandria University, Egypt
2. American University of the Caribbean School of Medicine, Sint Maarten
3. Faculty of Medicine, Tanta University, Egypt
4. Faculty of Medicine, Assiut University, Egypt
5. Department of Internal Medicine, Damascus University, Damascus, Syria
6. Department of Internal Medicine, Syrian Private University, Damascus, Syria
7. The National Ribat University, Al-Ribat, Sudan
8. Faculty of Medicine, Albaath University, Homs, Syria
9. Ivano-Frankivsk National Medical University, Ukraine
10. University of Medical Sciences and Technology, Sudan
11. Nile Vally University, Atbra, Sudan
12. Faculty of Medicine, Shendi University, Sudan
13. Faculty of Medicine, Aleppo University, Aleppo, Syria