Spinal opioids: historical perspectives and future directions. Introduction.
Waldman
S D
SD
Yaksh
T L
TL
D015360:Analgesia, Epidural / Q000639:trends*; D005544:Forecasting; D006801:Humans; D009294:Narcotics / Q000008:administration & dosage* / Q000627:therapeutic use; D010146:Pain / Q000188:drug therapy*
D009294:Narcotics