“Results of Concurrent HER2 (CERB-B2) Staining in the Primary Tumor and Lymph Node Metastasis in Advanced Stage Gastric Carcinoma ”. Annals of Medical Research 27, no. 9 (May 25, 2021): 2234–2239. Accessed May 11, 2026. http://www.annalsmedres.org/index.php/aomr/article/view/966.