A. . Dessalegn and B. . B Anderson, “Cancer of the Anus: A Five Year Review of Cases at Gondar University Hospital and a Thirty-Five Year Experience of a Single Surgeon”, Ethiop J Health Biomed Sci, vol. 5, no. 1, pp. 61–71, Jul. 2021, doi: 10.20372/ejhbs.v5i1.207.