Impact of acupuncture treatment on the lumbar surgery rate for low back pain in Korea: A nationwide matched retrospective cohort study Koh, Wonil ; Kang, Kyungwon ; Lee, Yoon Jae ; Kim, Me-riong ; Shin, Joon-Shik ; Lee, Jinho ; Lee, Jun-Hwan ; Shin, Kyung-Min ; Ha, In-Hyuk Abstract Publication: PLoS ONE Pub Date: June 2018 DOI: 10.1371/journal.pone.0199042 Bibcode: 2018PLoSO..1399042K