Levyk, O. M. “Prognostic Value of Immunohistochemical Marker HER2/Neu in Patients Resected for Gastric Cancer Stage IIIA”. Zaporozhye Medical Journal 16, no. 2 (June 19, 2014). Accessed October 8, 2025. https://zmj.zsmu.edu.ua/article/view/25417.