Comparison of Endovenous Radiofrequency Ablation, Laser Ablation, Foam Sclerotherapy and Surgical Stripping for Great Saphenous Varicose Veins. Extended 5-Year Follow-up of a RCT. (March 2017) - Lawaetz, M.; Serup, J.; Lawaetz, B.; Bjoern, L.; Blemings, A.; Eklof, B.; Rasmussen, L.