TY  - RPRT
TI  - Difficult pain.
AU  - Lesley Colvin
AU  - Karen Forbes
AU  - Marie Fallon
PY  - 2006
DO  - 10.1136/bmj.332.7549.1081
UR  - https://pubmed.ncbi.nlm.nih.gov/16675817/
ID  - 16675817
ER  -