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Sousa Júnior, E.C., Eulálio Filho, W.M.N., Nogueira, A.T. et al. Use of three-dimensional virtual images for planning surgery of complex anal fistulas: a new technology available via smartphone. Tech Coloproctol 23, 775–778 (2019). https://doi.org/10.1007/s10151-019-02036-4
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DOI: https://doi.org/10.1007/s10151-019-02036-4