Advanced Technique of Unilateral Biportal Endoscopy on Revision Surgery for Recurred Herniated Interverbral Disc: A Technical Note. - Kim, Hun-Chul; Lee, Jin Young; Cho, Hyeon Guk; Park, Jeong Woo; Han, Sang-Ho; Ko, Young-Il; Lyons, Mark K. (Case Reports in Orthopedics, 2024)