Nguyễn, H. H. H.; Lê, K. T.; Hoàng, M. T.; Trương, T. K.; Trần, T.; Nguyễn, C. EVALUATION OF INITIAL RESULTS OF UNILATERAL BIPORTAL ENDOSCOPIC DECOMPRESSION SURGERY IN DEGENERATIVE LUMBAR SPINE DISEASE IN PATIENTS OVER 60 YEARS OLD. VMJ 2026, 563.