Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) AOKI Kazuji and 友田 淳雄 and 上原 徹 and 鈴木 信治 and 坪内 俊二,The efficacy of lumbar flexion exercises for lumbar facet syndrome,The Journal of Japanese Society of Lumbar Spine Disorders,13459074,The Japanese Society of Lumbar Spine Disorders,2002,8,1,135-140,https://cir.nii.ac.jp/crid/1390282679417300096,https://doi.org/10.3753/yotsu.8.135