title: Prevention of postoperative infections following gastrointestinal operations.
mesh_terms: D001660:Biliary Tract Diseases / Q000601:surgery*; D002986:Clinical Trials as Topic; D004318:Doxycycline / Q000008:administration & dosage; D005767:Gastrointestinal Diseases / Q000601:surgery*; D006801:Humans; D007275:Injections, Intravenous; D011182:Postoperative Care; D011300:Preoperative Care; D011897:Random Allocation; D013530:Surgical Wound Infection / Q000517:prevention & control*; D013997:Time Factors; D014011:Tinidazole / Q000008:administration & dosage
chemical_list: D014011:Tinidazole; D004318:Doxycycline