TY  - RPRT
TI  - Caffeine and chronic back pain.
AU  - J M McPartland
AU  - J A Mitchell
PY  - 1997
DO  - 10.1016/s0003-9993(97)90011-3
UR  - https://pubmed.ncbi.nlm.nih.gov/9014959/
ID  - 9014959
ER  -