Early versus deferred endovenous ablation of superficial venous reflux in patients with venous ulceration: the EVRA RCT - Gohel, MS; Heatley, F; Liu, X; Bradbury, A; Bulbulia, R; Cullum, N; Epstein, DM; Nyamekye, I; Poskitt, KR; Renton, S; Warwick, J; Davies, AH (Health Technology Assessment, 2019)