1 From Sunlight, Nutrition, and Health Research Center (W.B.G.), San Francisco, CA; and Department of Global Public Health and Primary Care (T.R.), University of Bergen, Norway. wbgrant@infionline.net.
2 From Sunlight, Nutrition, and Health Research Center (W.B.G.), San Francisco, CA; and Department of Global Public Health and Primary Care (T.R.), University of Bergen, Norway.