1. Department of Hospital Medicine, Cleveland Clinic Foundation, Cleveland, OH, United States
2. Faculty of Medicine, Ain Shams University, Cairo, Egypt
3. High institute of Public Health, Alexandria University, Alexandria, Egypt
4. 4Department of Internal Medicine, Cleveland Clinic Foundation, Cleveland, OH, United States
5. Department of Medicine, Ascension St John Hospital, Detroit, Michigan, United States
6. Department of Cardiovascular Medicine, Heart and Vascular Institute, Cleveland Clinic Foundation, Cleveland, OH, United States