A post-pandemic snapshot of the magnitude of COVID-19 in Brazil: A countrywide study Eduardo Ribes Kohn, Maristela Bohlke, Antônia Almeida, Leandro Janelli, Luciana Monteiro Vasconcelos Sardinha, Fernando C. Wehrmeister, Pedro Curi Hallal

SARS-CoV-2 identification in an acute appendicitis case: Acute abdomen as manifestation of Multisystem Inflammatory Syndrome in a child with COVID-19 Amanda Munhoz Serra, Andréa Maria Cordeiro Ventura, Lucas Freitas Xavier, Angélica Braz Simões, Amaro Nunes Duarte-Neto

Cystatin C is a marker for acute kidney injury, but not for mortality among COVID-19 patients in Mexico Karime Ramos-Santos, Arturo Cortes-Telles, María Elena Uc-Miam, Azalia Avila-Nava, Roberto Lugo, Rodolfo Chim Aké, Ana Ligia Gutiérrez-Solis