title: [Decreasing perioperative mortality in USA. Centralization is not the whole explanation].
authors.affiliation: Blekingesjukhuset, Karlskrona. thomas.troeng@ltblekinge.se
authors.forename: Thomas
authors.initials: T
authors.lastname: Troëng
authors.forename: Ulf
authors.initials: U
authors.lastname: Haglund
mesh_terms: D002497:Centralized Hospital Services; D002983:Clinical Competence; D006801:Humans; D007431:Intraoperative Complications / Q000401:mortality*; D013514:Surgical Procedures, Operative / Q000401:mortality*; D014481:United States / Q000453:epidemiology