1. Division of Cardiovascular Medicine, University of Toledo Medical Center, Toledo, OH, USA
2. Division of Medicine, Forrest General Hospital, Hattiesburg, MS, USA
3. Section of Interventional Cardiology, Baylor College of Medicine, Houston, TX, USA
4. Division of Cardiology, Emory Clinical Cardiovascular Research Institute, Emory University School of Medicine, Atlanta, GA, USA
5. Section on Cardiovascular Medicine, Wake Forest University School of Medicine, Winston-Salem, NC, USA