[Calcium deficiency - osteoporosis in old age].
D000368:Aged; D000369:Aged, 80 and over; D002118:Calcium / Q000172:deficiency*; D002128:Calcium Metabolism Disorders; D006801:Humans; D010024:Osteoporosis
D002118:Calcium
CALCIUM/deficiency; OSTEOPOROSIS/in old age