Laser and radiofrequency ablation study (LARA study): A randomized study comparing radiofrequency ablation an endovenous laser ablation (810 nm) - Goode, SD; Chowdhury, A; Crockett, M; Beech, A; Simpson, R; Richards, T; Braithwaite, BD (Eur J Vasc Endovasc Surg, 2010)