Influence of high altitude on the expression of HIF-1 and on the prognosis of Ecuadorian patients with gastric adenocarcinoma - Barrera, Edwin Cevallos; Martinez, Edson Zangiacomi; Brunaldi, Mariângela Ottoboni; Donadi, Eduardo Antônio; Sankarankutty, Ajith Kumar; Kemp, Rafael; Santos, José Sebastião dos (Oncotarget, 2022)