1. Internal Medicine, Weiss Memorial Hospital, Chicago, IL, USA
2. Cardiology, Thomas Jefferson University Hospital, Philadelphia, PA, USA
3. Internal Medicine, Onslow Memorial Hospital, Jacksonville, NC, USA
4. Internal Medicine, Wayne State University, Detroit, MI, USA
5. Cardiovascular Medicine, Wake Forest University School of Medicine, Winston-Salem, NC, USA
6. Cardiology, Wayne State University/Detroit Medical Center, Detroit, MI, USA