Epidural versus intravenous fentanyl: a problem with small sample size.
Slover
R
R
Palmer
S K
SK
D004311:Double-Blind Method; D005260:Female; D005283:Fentanyl / Q000008:administration & dosage*; D006801:Humans; D007268:Injections, Epidural; D007275:Injections, Intravenous
D005283:Fentanyl