Impact of COVID-19 pandemic on the surgical treatment of gastric cancer Amanda Juliani Arneiro; Marcus Fernando Kodama Pertille Ramos; Marina Alessandra Pereira; André Roncon Dias; Bruno Zilberstein; Ulysses Ribeiro; Sergio Carlos Nahas;

C-peptide level as predictor of type 2 diabetes remission and body composition changes in non-diabetic and diabetic patients after Roux-en-Y gastric bypass Roberto de Cleva; Flavio Kawamoto; Georgia Borges; Priscila Caproni; Alex Jones Flores Cassenote; Marco Aurelio Santo;