Internal Medicine, Icahn School of Medicine at Mount Sinai , New York, NY, USA. Internal Medicine, Abington Health , Abington, PA, USA. Department of Internal Medicine, Detroit Heart center/Wayne State University , Detroit, MI, USA. Internal Medicine, Mayo Clinic , Jacksonville, FL, USA. Internal Medicine, New York University , New York, NY, USA. Cardiology, Beth Israel Hospital, Harvard University , Cambridge, MA, USA. Department of Cardiology, University of Texas Health Science Center , Houston, TX, USA. Keele Cardiovascular Research Group, Keele University , Stoke-on-Trent, UK. Department of Cardiology, Royal Stoke University Hospital , Stoke-on-Trent, UK. Department of Cardiology, Jefferson University , Philadelphia, PA, USA.