Clinical assessment of analgesic drugs. (1). Initial trial.
D000698:Analgesia; D000700:Analgesics; D000758:Anesthesia; D000760:Anesthesia and Analgesia; D008614:Meperidine; D010146:Pain; D059408:Pain Management
D000700:Analgesics; D008614:Meperidine
MEPERIDINE/anesthesia and analgesia