Effectiveness of percutaneous key lesion endoscopic lumbar decompression for the treatment of lumbar spinal stenosis in octogenarian patients. - Yang, Chien-Tung; Hung, Cheng-Che; Wu, Chih-Ying; Chiu, You-Pen; Guo, Jeng-Hung; Ji, Hui-Ru; Chiu, Cheng-Di (PLoS ONE, 2024)