Calcium and osteoporosis.
D002118:Calcium / Q000008:administration & dosage / Q000172:deficiency* / Q000378:metabolism; D004032:Diet; D004044:Dietary Proteins / Q000008:administration & dosage; D004967:Estrogens / Q000172:deficiency; D005260:Female; D006801:Humans; D010024:Osteoporosis / Q000453:epidemiology / Q000209:etiology*
D004044:Dietary Proteins; D004967:Estrogens; D002118:Calcium