Revision knee arthroplasty using a modular system manufactured in Brazil. Clinical and radiographic results with a mean nine-year follow-up Francisco Fontes Cintra; Mauricio Etchebehere; Eduardo Rached; Giancarlo Cavenaghi; Paulo Eduardo Dias Rahal; Rodrigo Gonçalves Pagnano;

Frequency and factors associated with hospital readmission after COVID-19 hospitalization: the importance of post-COVID diarrhea Maristela Pinheiro Freire; Maura Salaroli Oliveira; Marcello Mihailenko Chaves Magri; Bruno Melo Tavares; Igor Marinho; Ana Catharina De Seixas Santos Nastri; Geraldo Busatto Filho; Anna S. Levin;

Renin-Angiotensin-Aldosterone System Inhibitors in COVID-19: A Review Filipe Ferrari; Vítor Magnus Martins; Flávio Danni Fuchs; Ricardo Stein;