Melanosis coli: a contrast effect or an oncogenic effect? A large scale retrospective cohort study International Journal of Colorectal Disease Springer Nature Link Colorectal neoplasms in melanosis coli: a survey in Japan and a worldwide meta analysis International Journal of Colorectal Disease Springer Nature Link Pathology Outlines Melanosis coli AND RECTUM (ICDO3 C1820) Oncohema Key
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