title: Surgeon-related variables and the clinical trial.
mesh_terms: D000230:Adenocarcinoma / Q000601:surgery*; D000704:Analysis of Variance; D000900:Anti-Bacterial Agents / Q000627:therapeutic use; D002986:Clinical Trials as Topic; D003110:Colonic Neoplasms / Q000601:surgery*; D006801:Humans; D011183:Postoperative Complications / Q000453:epidemiology / Q000401:mortality; D011292:Premedication; D011300:Preoperative Care; D011446:Prospective Studies; D012004:Rectal Neoplasms / Q000601:surgery*; D012107:Research Design
chemical_list: D000900:Anti-Bacterial Agents