title: The reply.
authors.affiliation: Dean Emeritus and Professor Emeritus of Medicine and Public Health, University of Arizona, Tucson.
authors.forename: James E
authors.initials: JE
authors.lastname: Dalen
authors.affiliation: St Mary Mercy Hospital, Livonia, Mich.
authors.forename: Paul D
authors.initials: PD
authors.lastname: Stein
mesh_terms: D006801:Humans; D011655:Pulmonary Embolism / Q000628:therapy*; D016306:Vena Cava Filters / Q000706:statistics & numerical data*