Kildušis, Edvinas, Aurelijus Grigaliūnas, and Laura Žilevičė. “Endoscopic Elimination of Foreign Body from the Upper Gastrointestinal Tract in Republican Vilnius University Hospital: 25 years’ Experience”. Lietuvos chirurgija 17, no. 1-2 (November 4, 2018): 17-24. Accessed October 20, 2021. https://www.journals.vu.lt/lietuvos-chirurgija/article/view/12113.