Distribution of Disc Degeneration and Index Level in Patients with Lumbar Degenerative Diseases Undergoing Operation 
LIU Lei,WU Jianyun,HUANG Weimin,LI Xinbo,YU Xiuchun
Chinese General Practice . 2021, (5): 585 -591 .  DOI: 10.12114/j.issn.1007-9572.2020.00.492