Deniz Güney DUMAN, Funda EREN, Ender Güneş YEĞİN, Aygün İKİNCİ, and Cumhur YEĞEN, “Synchronous appearance of gastrointestinal stromal tumor and neuroendocrine tumor in stomach: Review of the literature and management strategies”, Turkish Journal of Gastroenterology, vol. 23, no. 3, pp. 258–261, Jul. 2019.