1. Division of Endocrinology and Metabolism, University of Virginia Health Sciences System, Charlottesville, Virginia.
2. Division of Endocrinology, Diabetes and Metabolism, University of California at San Diego, La Jolla, California.
3. Prince Henry's Institute for Medical Research, Monash University, Melbourne, Australia.
4. Division of Preventive Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts.