title: Bilateral lower extremity duplex scanning revisited.
authors.forename: Joann
authors.initials: J
authors.lastname: Lohr
mesh_terms: D005260:Female; D006801:Humans; D008297:Male; D012189:Retrospective Studies; D018616:Ultrasonography, Doppler, Duplex / Q000379:methods*; D020246:Venous Thrombosis / Q000000981:diagnostic imaging* / Q000401:mortality