1. Department of Medicine; Section of General Internal Medicine; Boston University School of Medicine; Boston Massachusetts USA
2. National Heart; Lung and Blood Institute's Framingham Heart Study; Framingham MA Maryland MD USA
3. Boston University Department of Mathematics; Boston Massachusetts USA
4. Massachusetts General Hospital Department of Cardiac MR PET CT and Harvard Medical School; Boston Massachusetts USA
5. Brigham and Women's Hospital Division of Endocrinology and Harvard Medical School; Boston Massachusetts USA