Spatial and temporal fluctuations in COVID-19 fatality rates in Brazilian hospitals - Brizzi, Andrea; Whittaker, Charles; Servo, Luciana M. S; Hawryluk, Iwona; Prete Junior, Carlos Augusto; Souza, William M. de; Aguiar, Renato S; Costa, Sílvia Figueiredo; Levin, Anna Sara Shafferman; Sabino, Ester Cerdeira (Nature medicine, 2022)