TY  - RPRT
TI  - Pain: an overview.
AU  - J D Loeser
AU  - R Melzack
PY  - 1999
DO  - 10.1016/s0140-6736(99)01311-2
UR  - https://pubmed.ncbi.nlm.nih.gov/10334273/
ID  - 10334273
ER  -