TY  - RPRT
TI  - Recent developments in patient-controlled analgesia.
AU  - Klaus A Lehmann
PY  - 2005
DO  - 10.1016/j.jpainsymman.2005.01.005
UR  - https://pubmed.ncbi.nlm.nih.gov/15907649/
ID  - 15907649
ER  -