citation journal title = Diseases of the Colon amp Rectum citation issn = 00123706 citation volume = 25 citation issue = 8 citation doi = 101007/BF02553311 citation firstpage = 783 citation lastpage = 786 citation publication date = 1982/11/01 citation title = Cephalothin cefoxitin or metronidazole in elective colonic surgery