TY  - RPRT
TI  - Methodologic issues in low back pain research in primary care.
AU  - L M Bouter
AU  - M W van Tulder
AU  - B W Koes
PY  - 1998
DO  - 10.1097/00007632-199809150-00019
UR  - https://pubmed.ncbi.nlm.nih.gov/9779536/
ID  - 9779536
ER  -