Answer to the letter to the editor of T. Xu et al. concerning "Is detethering necessary before deformity correction in congenital scoliosis associated with tethered cord syndrome: a meta-analysis of current evidence" by Ahuja K, et al. (2021) Eur Spine J 30(3):599–611

Morrison A, Polisena J, Husereau D et al (2012) The effect of English-language restriction on systematic review-based meta-analyses: a systematic review of empirical studies. Int J Technol Assess Health Care 28:138–144. https://doi.org/10.1017/S0266462312000086

Ahuja K, Ifthekar S, Mittal S et al (2021) Is detethering necessary before deformity correction in congenital scoliosis associated with tethered cord syndrome: a meta-analysis of current evidence. Eur Spine J 30(3):599–611