A comparative study of four premedications.
D006801:Humans; D008614:Meperidine; D011229:Preanesthetic Medication; D011292:Premedication; D011398:Promethazine; D012601:Scopolamine
D008614:Meperidine; D012601:Scopolamine; D011398:Promethazine
MEPERIDINE; PREANESTHETIC MEDICATION; PROMETHAZINE; SCOPOLAMINE