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Cariati, A., Piromalli, E., Copello, F. et al. Anal stretch for chronic anal fissure: an old operation that stood the test of time. Langenbecks Arch Surg 404 (Suppl 1), 9–10 (2019). https://doi.org/10.1007/s00423-012-0969-x
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DOI: https://doi.org/10.1007/s00423-012-0969-x