title: Discussion.
mesh_terms: D017052:Hospital Mortality; D006801:Humans; D007431:Intraoperative Complications / Q000453:epidemiology*; D061214:Patient Safety / Q000706:statistics & numerical data*; D011183:Postoperative Complications / Q000453:epidemiology*; D058996:Quality Improvement / Q000458:organization & administration*; D019984:Quality Indicators, Health Care / Q000706:statistics & numerical data*; D013503:Surgery Department, Hospital / Q000592:standards*