Prabhu, M. Ajoo Anto, and Alok Mohanty. “Accuracy of Clinical Methods and Doppler Ultrasound in Detection of Incompetency of Sapheno-Femoral Junction and Perforators Compared With Operative Results”. International Surgery Journal 4, no. 10 (September 27, 2017): 3300–3305. Accessed November 9, 2025. https://www.ijsurgery.com/index.php/isj/article/view/1987.