Ahat ANDİCAN, et al. “A Rare Case of Gastrointestinal Stromal Tumor Presenting With Closed Perforation of the Small Intestine”. Turkish Journal of Gastroenterology, vol. 23, no. 3, July 2019, pp. 253-7, https://tjg.avesjournals.com/index.php/tjg/article/view/2636.