Osteoporosis in elderly men.
D000368:Aged; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010024:Osteoporosis / Q000097:blood*; D010281:Parathyroid Hormone / Q000097:blood*; D013739:Testosterone / Q000097:blood*
D010281:Parathyroid Hormone; D013739:Testosterone