9Chen YC,Lee SH,Chen D. Intradiscal pressure study of percutaneousdisc decompression with nucleoplasty in human cadavers [ J ]. Spine,2003,28(7):661 -665.
10Shirado 0,Doi T, Akai M. An outcome measure for japanese peoplewith chronic low back pain : an introduction and validation study of ja-pan low back pain evaluation questionnaire [ J ]. Spine ,2007 ,32(26):3052 -3059.