P. . Khantiworapong, S. . Subwongchareon, P. . Sukheepot, and N. . Praditphol, “The Power Setting of Endovenous Microwave Ablation for the Treatment of Varicose Vein: In Vitro Study”, Thai J Surg, vol. 29, no. 2, pp. 64–68, Jun. 2008.