TY  - RPRT
TI  - Optimum opioid for extradural administration.
AU  - T M Cook
AU  - C F Stannard
PY  - 1995
DO  - 10.1093/bja/75.2.250
UR  - https://pubmed.ncbi.nlm.nih.gov/7577265/
ID  - 7577265
ER  -