Source
Medline Plus. Calcium. Accessed May 12, 2010
National Institutes of Health National Institute of Child Health and Human Development. Calcium. Accessed May 12, 2010
National Institutes of Health Office of Dietary Supplements. Dietary Supplement Fact Sheet: Calcium. Accessed May 12, 2010
National Institute of Arthritis and Musculoskeletal and Skin Diseases. Calcium and Vitamin D: Important at Every Age. Accessed May 12, 2010
National Osteoporosis Foundation. Calcium: What You Should Know. Accessed May 12, 2010
Written by familydoctor.org editorial staff
Created: 05/10