1. Division of Cardiovascular Diseases, Mayo Clinic, Rochester, MN
2. Department of Health Services Research, Mayo Clinic, Rochester, MN
3. Showa University, Tokyo, Japan
4. University Brazilia, Brazil
5. Division of Cardiovascular Diseases, Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, NY
6. Division of Endocrinology, Mayo Clinic, Rochester, MN