“The Valves and Tributary Veins of the Saphenofemoral Junction: Ultrasound Findings in Normal Limbs”. Veins and Lymphatics 2, no. 1 (August 2, 2013): e18. Accessed April 29, 2026. https://www.pagepressjournals.org/vl/article/view/vl.2013.e18.