PT - JOURNAL ARTICLE AU - Deepak Kumar Jha AU - Jaskaran Singh Gosal AU - Jigish Ruparelia AU - Nitin Kumar AU - Tarunesh Sharma AU - Pradeep Kumar Bhatia AU - Pushpinder Khera TI - Simple working sheath for lumbar and lumbosacral spine: technical note AID - 10.1136/bmjinnov-2020-000558 DP - 2021 Apr 01 TA - BMJ Innovations PG - 478--481 VI - 7 IP - 2 4099 - http://innovations.bmj.com/content/7/2/478.short 4100 - http://innovations.bmj.com/content/7/2/478.full SO - BMJ Innov2021 Apr 01; 7