title: The assessment of deep vein valve incompetence by ascending phlebography with a Valsalva manoeuvre: a comparison with descending phlebography.
authors: M
authors: M
authors: Lea Thomas
authors: P S
authors: PS
authors: Treweeke
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010690:Phlebography / Q000379:methods*; D014636:Valsalva Maneuver; D014689:Venous Insufficiency / Q000000981:diagnostic imaging*