TY - RPRT TI - Physical exercise as prophylaxis against involutional vertebral bone loss: a controlled trial. AU - B Krølner AU - B Toft AU - S Pors Nielsen AU - E Tøndevold PY - 1983 DO - 10.1042/cs0640541 UR - https://pubmed.ncbi.nlm.nih.gov/6339154/ ID - 6339154 ER -