1. Department of Internal Medicine, OhioHealth/Riverside Methodist Hospital, Columbus, OH, USA
2. Department of Medicine, Harvard Medical School, Boston, MA, USA
3. Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
4. Cook Research Incorporated, West Lafayette, IN, USA
5. Department of Internal Medicine, Riverside Methodist Hospital, Columbus, OH, USA
6. Department of Cardiothoracic Surgery, Stanford University Medical Center, Stanford, CA, USA