Evaluation of the expression of the oncogen C-ERBB-2/HER2 in advanced gastric cancer cases from Costa Rica. - Cordero-García, Eugenia; Baéz-Astúa, Andrés; Roa-Martínez, Yolanda; Ramírez-Mayorga, Vanessa; Alpízar-Alpízar, Warner (Ecancermedicalscience, 2019)