Feasibility of Recurrent Herniation Surgery with Biportal Endoscopic Discectomy : A Comparison of Biportal Endoscopic Discectomy and Microscopic Discectomy for Recurrent Disc Herniation. - Han, Sang Youp; Lee, Sang Hyub; Jang, Jae-Won; Lee, Dong-Geun; Cho, Yong Eun; Park, Choon-Keun; Kim, Il Sup (Journal of Korean Neurosurgical Society, 2026)