Bredtmann, R D Epidural analgesia in colonic surgery: results of a randomized prospective study. [electronic resource] - The British journal of surgery Jun 1990 - 638-42 p. digital Publication Type: Clinical Trial; Journal Article; Randomized Controlled Trial ISSN: 0007-1323 Standard No.: 10.1002/bjs.1800770615 doi Subjects--Topical Terms: Analgesia, EpiduralBupivacaineColon--surgeryDefecationHumansPain, Postoperative--prevention & controlProspective StudiesRandomized Controlled Trials as TopicTime Factors