CAUDAL analgesia, 1954; minimal dosage technic.
D001003:Anal Canal / Q000601:surgery*; D000698:Analgesia; D000777:Anesthetics; D000779:Anesthetics, Local; D013505:Digestive System Surgical Procedures; D006801:Humans; D059408:Pain Management; D012007:Rectum / Q000601:surgery*
D000777:Anesthetics; D000779:Anesthetics, Local
ANESTHETICS, LOCAL; ANUS/surgery; RECTUM/surgery