Crossotomy vs crossectomy for saphenous vein sparing surgery in patients with varicose veins due to ostial incontinence: protocol for double blind, multicenter, randomized trial. Veins & Lymphatics [Internet]. 2024 Jan. 25 [cited 2026 May 13];13. Available from: https://www.pagepressjournals.org/vl/article/view/12146