title: Time of day is associated with postoperative morbidity: an analysis of the national surgical quality improvement program data.
authors.forename: J Gregory
authors.initials: JG
authors.lastname: Modrall
mesh_terms: D006801:Humans; D009017:Morbidity; D011183:Postoperative Complications / Q000453:epidemiology*; D011787:Quality of Health Care / Q000706:statistics & numerical data*; D013514:Surgical Procedures, Operative / Q000706:statistics & numerical data*; D013997:Time Factors