TY  - RPRT
TI  - Does exercise prevent osteoporosis?
AU  - J E Block
AU  - R Smith
AU  - D Black
AU  - H K Genant
PY  - 1987
DO  - 10.1001/jama.1987.03390220113033
UR  - https://pubmed.ncbi.nlm.nih.gov/3586232/
ID  - 3586232
ER  -