[Contribution to the study of senile osteoporosis. Research carried out with the aid of Ca-47].
D000368:Aged; D000369:Aged, 80 and over; D000375:Aging; D002132:Calcium Radioisotopes; D002136:Calcium, Dietary; D006801:Humans; D010024:Osteoporosis; D012106:Research
D002132:Calcium Radioisotopes; D002136:Calcium, Dietary
CALCIUM/radioactive; OSTEOPOROSIS/in old age