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Santoro, G.A., Di Falco, G. (2006). Endosonographic Anatomy of the Normal Anal Canal. In: Benign Anorectal Diseases. Springer, Milano. https://doi.org/10.1007/88-470-0507-8_5
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DOI: https://doi.org/10.1007/88-470-0507-8_5
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