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GT and AT contributed to data collection, data interpretation and writing; GT, RP and RB contributed to writing, figures and data analysis.
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Tappero, G., Parente, R., Borghini, R. et al. A dark polyp in the anorectum. Tech Coloproctol 23, 1097–1099 (2019). https://doi.org/10.1007/s10151-019-02085-9
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DOI: https://doi.org/10.1007/s10151-019-02085-9