Difficulties in designing randomised controlled trials of vitamin D supplementation for reducing acute cardiovascular events and in the analysis of their outcomes
Barbara J. Boucher,
William B. Grant
Affiliations
Barbara J. Boucher
Corresponding author.; Blizard Institute, Barts & The London School of Medicine & Dentistry, Queen Mary University of London, 2-4 Newark Street, London E12AT, UK
William B. Grant
Sunlight, Nutrition, and Health Research Center, P.O. Box 641603, San Francisco, CA 94164-1603, USA