ÇELEBİ KOBAK, Arzu, et al. “Gastric Polypoid Intramucosal Carcinoma and an Adjacently Located Leiomyoma at the Cardia”. Turkish Journal of Gastroenterology, vol. 19, no. 2, Jan. 2008, pp. 114-6, https://www.turkjgastroenterol.org/index.php/tjg/article/view/1644.