1. Department of Internal Medicine; University of Illinois at Chicago/Advocate Christ Medical Center; Oak Lawn Illinois USA
2. Department of Cardiovascular Diseases; Mayo Clinic; Rochester USA
3. Department of Medicine; University of Florida; Gainesville USA
4. Department of Internal Medicine; Cleveland Clinic Foundation; Cleveland USA
5. Department of Surgery; AlKalamoon General Hospital; AlNabek Syrian Arab Republic
6. Faculty of Medicine; Syrian Private University; Damascus Syrian Arab Republic
7. Faculty of Medicine; University of Aleppo; Aleppo Syrian Arab Republic
8. ENT Department; Al Razi Public Hospital; Aleppo Syrian Arab Republic
9. Medical Education Program; Syrian Virtual University; Damascus Syrian Arab Republic
10. Community Mental Health; Counties Manukau Health; Manukau New Zealand
11. Department of Medicine, Cardiology Division; University of Arkansas for Medical Sciences; Little Rock USA