1. Department of Adult Cardiology & Cardiovascular Surgery, Heart Hospital, Hamad Medical Corporation (HMC), Doha, Qatar
2. Cardiology Department, National Heart Institute, Cairo, Egypt
3. Department of Clinical Medicine, Weill Cornell Medical School, Qatar
4. Clinical Research, Hamad General Hospital, Doha, Qatar
5. Cardiology Unit, Internal Medicine, Ahmed Maher Teaching hospital, Cairo, Egypt
6. Qatar Cardiovascular Research Center, Doha, Qatar