Radiofrequency induced thermotherapy (RFITT) of varicose veins compared to endovenous laser treatment (EVLT): a non-randomized prospective study concentrating on occlusion rates, side-effects and clinical outcome - Tesmann, JP; Thierbach, H; Dietrich, A; Grimme, H; Vogt, T; Rass, K (Eur J Dermatol, 2011)