title: On hazard ratios and magnitude of impact on prognosis.
authors.forename: Gregory
authors.initials: G
authors.lastname: Sergeant
authors.forename: Baki
authors.initials: B
authors.lastname: Topal
authors.forename: Steffen
authors.initials: S
authors.lastname: Fieuws
mesh_terms: D014670:Ampulla of Vater; D003138:Common Bile Duct Neoplasms / Q000401:mortality* / Q000473:pathology*; D006801:Humans; D009361:Neoplasm Invasiveness; D011379:Prognosis; D016016:Proportional Hazards Models