HolickM.F. (2003). Vitamin D deficiency: What a pain it is. Mayo Clinic Proceedings, 78(12), 1457–1459.
2.
WardE.M. (2004). Research uncovers dramatic new health roles for vitamin D. Environmental nutrition: The newsletter of food, nutrition, and health, 27(4). Retrieved April 22, 2005, from www.environmentalnutrition.com/pub/27_4/features/150955-1.html
