Kolosov, Andrej, Valdemaras Jotautas, and Kęstutis Strupas. “Perianal Abscesses Caused by an Ingested Foreign Body Long Time Ago: Case Report”. Lietuvos chirurgija 15, no. 1 (April 27, 2016): 28-31. Accessed May 26, 2022. https://www.journals.vu.lt/lietuvos-chirurgija/article/view/9962.