title: Centralization of surgery for periampullary malignancy.
authors.affiliation: Department of Surgery, Academic Medical Center, Amsterdam, The Netherlands.
authors.forename: D J
authors.initials: DJ
authors.lastname: Gouma
authors.forename: H
authors.initials: H
authors.lastname: Obertop
mesh_terms: D014670:Ampulla of Vater; D001662:Biliary Tract Surgical Procedures / Q000401:mortality; D003138:Common Bile Duct Neoplasms / Q000401:mortality / Q000601:surgery*; D017052:Hospital Mortality / Q000639:trends; D006782:Hospitals, Special / Q000706:statistics & numerical data*; D006801:Humans; D009364:Neoplasm Recurrence, Local; D016019:Survival Analysis