Remarks and observation on obstetric analgesia.
D016362:Analgesia, Obstetrical; D005260:Female; D006801:Humans; D007743:Labor, Obstetric; D008614:Meperidine; D010208:Papaverine / Q000627:therapeutic use*; D011247:Pregnancy; D014937:Work
D008614:Meperidine; D010208:Papaverine
LABOR; MEPERIDINE; PAPAVERINE/therapeutic use