The decreasing incidence of postoperative infection rates.
D001424:Bacterial Infections / Q000453:epidemiology* / Q000517:prevention & control; D003428:Cross Infection / Q000453:epidemiology* / Q000517:prevention & control; D005767:Gastrointestinal Diseases / Q000601:surgery*; D006801:Humans; D011183:Postoperative Complications / Q000453:epidemiology* / Q000517:prevention & control; D012307:Risk Factors; D013530:Surgical Wound Infection / Q000453:epidemiology* / Q000517:prevention & control; D006113:United Kingdom