SinghA. K.; KarmacharyaR. M.; VaidyaS.; ThapaP. Quantification of Superficial Venous Reflux by Duplex Ultrasound - Role of Peak Reflux Velocity and Reflux Time in the Assessment of Varicose Vein. Journal of Nepal Health Research Council, v. 18, n. 3, p. 442-447, 14 Nov. 2020.