TY - GEN AU - Bouter,L M AU - van Tulder,M W AU - Koes,B W TI - Methodologic issues in low back pain research in primary care SN - 0362-2436 PY - 1999///0105 KW - Clinical Trials as Topic KW - standards KW - Humans KW - Low Back Pain KW - classification KW - Outcome Assessment, Health Care KW - Primary Health Care KW - Quality of Life KW - Research Design N1 - Publication Type: Journal Article UR - https://doi.org/10.1097/00007632-199809150-00019 ER -