The old and the new: morphine, meperidine, and anileridine.
D000698:Analgesia; D000758:Anesthesia; D000760:Anesthesia and Analgesia; D007540:Isonipecotic Acids; D008614:Meperidine; D009020:Morphine; D059408:Pain Management
D007540:Isonipecotic Acids; C100232:anileridine; D009020:Morphine; D008614:Meperidine
MEPERIDINE/anesthesia and analgesia; MORPHINE/anesthesia and analgesia