TY - RPRT TI - Development and initial validation of the back pain functional scale. AU - P W Stratford AU - J M Binkley AU - D L Riddle PY - 2000 DO - 10.1097/00007632-200008150-00015 UR - https://pubmed.ncbi.nlm.nih.gov/10954642/ ID - 10954642 ER -