Vitamin D – The Sunshine Vitamin
Source
http://www.nlm.nih.gov/medlineplus/ency/article/002405.htm
http://www.mayoclinic.com/health/vitamin-d/NS_patient-vitamind
http://www.webmd.com/vitamins-supplements/ingredientmono-929-VITAMIN%20D.aspx?activeIngredientId=929&activeIngredientName=VITAMIN%20D
http://ods.od.nih.gov/factsheets/VitaminD-HealthProfessional/
