Osteoporosis in young men.
D000328:Adult; D000368:Aged; D000375:Aging; D001862:Bone Resorption / Q000209:etiology; D002118:Calcium / Q000652:urine; D004044:Dietary Proteins / Q000008:administration & dosage; D005260:Female; D006801:Humans; D008297:Male; D010010:Osteoclasts / Q000378:metabolism; D010024:Osteoporosis / Q000209:etiology*
D004044:Dietary Proteins; D002118:Calcium