Answer to the Letter to the Editor of Gui-Tao Li et al. concerning: "A systematic review and meta-analysis of biological treatments targeting tumour necrosis factor α for sciatica" by Williams NH, Lewis R, Din NU, Matar HE, Fitzsimmons D, Phillips CJ, Sutton A, Burton K, Hendry M, Nafees S, Wilkinson C (2013) Eur Spine J; 22:1921-1935

针对李桂涛等人的来信，答复如下：Williams NH、Lewis R、Din NU、Matar HE、Fitzsimmons D、Phillips CJ、Sutton A、Burton K、Hendry M、Nafees S、Wilkinson C (2013) Eur Spine J; 22:1921-1935 发表的题为“靶向肿瘤坏死因子α治疗坐骨神经痛的生物疗法的系统评价和荟萃分析”的文章。