Trends in Use of High-Dose Vitamin D Supplements Exceeding 1000 or 4000 International Units Daily, 1999-2014

JAMA-JOURNAL OF THE AMERICAN MEDICAL ASSOCIATION

AMER MEDICAL ASSOC

1. National Institutes of Health National Heart, Lung, and Blood Institute [R01 HL103706, T32-HL-007779]
2. Office of Dietary Supplements [R01 HL103706-S1]