2625780 ECVA extended canonical variates analysis 6 2625781 ECVA extracranial vertebral artery 6 2625783 ECVA E chart visual acuity 1 2625782 ECVA Early atherothrombotic cardiovascular disease 1 2625785 ECVA electrocoagulation of the central veins of the adrenals 1 2625784 ECVA endobronchial CV assessment 1 2625786 ECVA Endoscopic collateral ventilation assessment 1 2625787 ECVA epidemiological importance of Acute Cerebrovascular Disorders 1 2625779 ECVA extracellular volume fraction 1