title: Prophylactic regimens in colorectal surgery: an open, randomized, consecutive trial on metronidazole used alone or in combination with ampicillin or doxycycline.
mesh_terms: D000328:Adult; D000667:Ampicillin / Q000627:therapeutic use*; D001424:Bacterial Infections / Q000517:prevention & control*; D002986:Clinical Trials as Topic; D003106:Colon / Q000601:surgery*; D004318:Doxycycline / Q000627:therapeutic use*; D004359:Drug Therapy, Combination; D006801:Humans; D008795:Metronidazole / Q000627:therapeutic use*; D008875:Middle Aged; D011292:Premedication; D011897:Random Allocation; D012007:Rectum / Q000601:surgery*
chemical_list: D008795:Metronidazole; D000667:Ampicillin; D004318:Doxycycline