Investigation on radiofrequency and laser (980 nm) effects after endoluminal treatment of saphenous vein insufficiency in an ex-vivo model - Schmedt, CG; Sroka, R; Steckmeier, S; Meissner, OA; Babaryka, G; Hunger, K; Ruppert, V; Sadeghi-Azandaryani, M; Steckmeier, BM (Eur J Vasc Endovasc Surg, 2006)