Esin Kaymaz, et al. “The Relationship of Clinicopathological Findings and PDGFR-β Expression With Tumor Recurrence in Gastrointestinal Stromal Tumors”. Turkish Journal of Gastroenterology, vol. 32, no. 12, Dec. 2021, pp. 1038-4, https://turkjgastroenterol.avesjournals.com/index.php/tjg/article/view/4146.