1. Reoperation Rate After Surgery for Lumbar Herniated Intervertebral Disc Disease
2. Statistics Korea, National Health Insurance Corporation. Statistics of Surgical Opertions & Covered by NHI, Operation by Age/Gender/Type of Opertaion/Type of Medical Institution per 100,000 people (2006-2015). [Internet] 2017 [cited 2017 May 17]; Available from: URL: http://kosis.kr/statHtml/statHtml.do?orgId=350&tblId=TX_35004_A015&conn_path=I2
3. Statistics Korea, National Health Insurance CorporationHealthcare Bigdata Hub, Health Insurance Review & Assessment Service. Statistics of Lumbar Surgery using operation_code by N1499, N1493, N1494, N0466, N0469. [Internet] 2015-2016 [cited 2017 Dec 6]; Available from: URL: http://opendata.hira.or.kr/op/opc/olapDiagBhvInfo.do
4. Reoperation rate after surgery for lumbar spinal stenosis without spondylolisthesis: a nationwide cohort study
5. Postoperative pain management