Predicting pancreatic fistulas after pancreatoduodenectomy: development and internal validation of a new preoperative nomogram Guilherme Naccache Namur; Fernanda Lopez Mazzucato; Ricardo Jureidini; Thiago Costa Ribeiro; Manoel de Souza Rocha; José Jukemura; Ulysses Ribeiro Junior;

Impact of HIV pre-exposure prophylaxis (PREP) on health-related quality of life (QOL) of patients followed up at a reference center in São Paulo, Brazil Michelle Kaoru Takada-de-Souza; Camila de Melo Picone; Vivian Iida Avelino-Silva; Angela Carvalho Freitas; Aluisio Cotrim Segurado;

Is it Safe to Perform Elective Colorectal Surgical Procedures during the COVID-19 Pandemic? A Single Institution Experience with 103 Patients Lucas Faraco Sobrado; Caio Sergio Rizkallah Nahas; Carlos Frederico Sparapan Marques; Guilherme Cutait de Castro Cotti; Antônio Rocco Imperiale; Pedro Averbach; José Donizeti de Meira; Natally Horvat; Ulysses Ribeiro-Júnior; Ivan Cecconello; Sergio Carlos Nahas;