A comparison of 50, 100 and 200 mg of intra-articular pethidine during knee joint surgery, a controlled study with evidence for local demethylation to norpethidine.
Pain. 1999 Mar;80(1-2):229-38. doi: 10.1016/s0304-3959(98)00207-3.
Pain. 1999.
PMID: 10204735
Clinical Trial.