Arteriovenous graft assessed frequency:NRat:Pt:^Patient:Qn:US.doppler
arteriovenous graft assessed frequency:nrat:pt:^patient:qn:us.doppler
Arteriovenous graft assessed frequency:Number=Count/Time:To identify measures at a point in time:^Patient:Quantitative:Ultrasound.doppler
arteriovenous graft assessed frequency:number=count/time:to identify measures at a point in time:^patient:quantitative:ultrasound.doppler