title: Invited commentary.
authors.forename: Thomas W
authors.initials: TW
authors.lastname: Wakefield
mesh_terms: D005260:Female; D006801:Humans; D008297:Male; D009369:Neoplasms / Q000601:surgery*; D011183:Postoperative Complications / Q000175:diagnosis*; D011655:Pulmonary Embolism / Q000453:epidemiology*; D020246:Venous Thrombosis / Q000453:epidemiology*