title: Ultrasonography and graft patency.
authors.forename: J
authors.initials: J
authors.lastname: Malik
mesh_terms: D001166:Arteriovenous Shunt, Surgical; D006801:Humans; D015337:Multicenter Studies as Topic; D016032:Randomized Controlled Trials as Topic; D006435:Renal Dialysis; D013997:Time Factors; D014463:Ultrasonography; D014654:Vascular Patency