Poškus, Tomas, and Edvard Grišin. “Adult Intussusception – a Rare Cause of Intestinal Obstruction in Adults”. Lietuvos Chirurgija, vol. 14, no. 4, Dec. 2015, pp. 270-3, https://doi.org/10.15388/LietChirur.2015.4.9203.