1 Department of Medicine, Massachusetts General Hospital, Boston; Harvard Medical School, Boston, Mass. Electronic address: amulya.nagarur@mgh.harvard.edu.
2 Department of Medicine, Division of Cardiology, Johns Hopkins University School of Medicine, Baltimore, MD.
3 Harvard Medical School, Boston, Mass; Department of Medicine, Cambridge Health Alliance, Cambridge, Mass.
4 Department of Surgery, Section of Endocrine Surgery, Beth Israel Deaconess Medical Center, Boston, Mass.