
1	A Clinical Study of Low Back Pain Yak Woo Roh, Jae Eui Song, Chang Se Byun, Chang Hyun Baik J Korean Orthop Assoc.1985;20(3):445-453. Published online 2019 February 28 DOI: http://dx.doi.org/10.4055/jkoa.1985.20.3.445