1. From the Department of Preventive Medicine and Public Health (AA and MAM-G), the Department of Physiology and Nutrition (JAM), and the Service of Internal Medicine (JJB), University of Navarra, Pamplona, Spain; the Department of Epidemiology, Harvard School of Public Health, Boston, MA (AA); and the Department of Health Sciences, University of Jaén, Jaén, Spain (MD-R)