1. Department of Epidemiology, Richard M. Fairbanks School of Public Health, Indiana University, Indianapolis, IN
2. Department of Medicine, Division of Cardiovascular Medicine, Stanford University, Stanford, CA
3. Department of Nutrition, Harvard T. H. Chan School of Public Health, Boston, MA
4. Center for Magnesium Education and Research, Pahoa, HI
5. Department of Epidemiology and Biostatistics, School of Public Health, Indiana University, Bloomington, IN
6. Division of Epidemiology, Vanderbilt Ingram Cancer Center, and Department of Veterans Affairs, Tennessee Valley Healthcare System, Geriatric, Research, Education and Clinical Center, Nashville, TN
7. Department of Epidemiology, School of Medicine, Fukushima Medical University, Fukushima, Japan