Why meta-analysis?
Halpern
Stephen
S
D015360:Analgesia, Epidural; D016362:Analgesia, Obstetrical; D000701:Analgesics, Opioid / Q000008:administration & dosage*; D000779:Anesthetics, Local / Q000008:administration & dosage*; D005260:Female; D006801:Humans; D007278:Injections, Spinal; D015201:Meta-Analysis as Topic; D011247:Pregnancy
D000701:Analgesics, Opioid; D000779:Anesthetics, Local