1. Cook County Health; Department of Medicine; Chicago IL USA
2. Cook County Health; Division of Cardiology; Chicago IL USA
3. University Hospitals, Case Western Reserve University; Division of Cardiac Surgery; Cleveland OH USA
4. Rush University Medical Center; Division of Cardiology; Chicago IL USA
5. Brigham and Women's Hospital, Harvard Medical School; Division of Cardiac Surgery; Boston MA USA
6. Ain Shams University; Department of Obstetrics and Gynaecology, Faculty of Medicine; 16 Ali Fahmi Kamel Street Heliopolis Cairo Egypt 11351