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Yongzhao Zhao, Yanjie Zhu, Guangyue Yan and Jie Zhang declare that they have no conflict of interest.
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Y. Zhao and Y. Zhu contributed equally to this work.
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Zhao, Y., Zhu, Y., Yan, G. et al. Letter to the Editor concerning “Association between IGF1 gene single nucleotide polymorphism (rs5742612) and adolescent idiopathic scoliosis: a meta-analysis” by M. Guan et al. (Eur Spine J; 2016. doi:10.1007/s00586-016-4742-7). Eur Spine J 26, 1312–1313 (2017). https://doi.org/10.1007/s00586-017-5006-x
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DOI: https://doi.org/10.1007/s00586-017-5006-x