title: Noninvasive quantitation of deep venous incompetence: primary vs secondary varicose veins.
mesh_terms: D001783:Blood Flow Velocity; D001794:Blood Pressure; D006801:Humans; D010689:Phlebitis / Q000150:complications / Q000175:diagnosis*; D010690:Phlebography; D014648:Varicose Veins / Q000175:diagnosis* / Q000209:etiology