Kanchanabat, B., Wongmahisorn, Y., Stapanavatr, W., Kanchanasuthiruk, P., & Manomaiphiboon, A. (2011). Pattern and Prevalence of Venous Reflux in Patients with Lower Extremity Chronic Venous Insufficiency. Vajira Medical Journal : Journal of Urban Medicine, 52(2), 119–128. retrieved from https://he02.tci-thaijo.org/index.php/VMED/article/view/339