1. Department of Cardiology, West Virginia University, Morgantown, Wv, USA
2. Department of Internal Medicine, University of Connecticut, Farmington, CT, USA
3. Detroit Medical Center, Wayne State University, Detroit, MI, USA
4. Department of Internal Medicine, Carle Foundation Hospital, Chicago, IL, USA
5. Department of Cardiology, Thomas Jefferson University, Philadelphia, PA, USA
6. Department of Cardiology, University of Toledo, Toledo, OH, USA
7. Department of Cardiology, Weill Cornell Medicine-Qatar, Doha, Qatar