New major study on surgical outcomes.
D019985:Benchmarking; D006801:Humans; D017063:Outcome Assessment, Health Care / Q000592:standards; D011785:Quality Assurance, Health Care / Q000379:methods; D018570:Risk Assessment; D012308:Risk Management; D013530:Surgical Wound Infection / Q000209:etiology / Q000517:prevention & control*