1. Cardiac MR/PET/CT Program, Department of Radiology and Division of Cardiology, Massachusetts General Hospital, Harvard Medical School, Boston
2. Yale New-Haven Hospital of Yale University School of Medicine, Connecticut
3. University of California–San Diego Pulmonary, Critical Care and Sleep Medicine Division, La Jolla
4. Divisions of General Internal Medicine and Infectious Diseases, Massachusetts General Hospital, Harvard Medical School, Boston
5. Program in Nutritional Metabolism, Divisions of General Internal Medicine and Infectious Diseases, Massachusetts General Hospital, Harvard Medical School, Boston