Estimating the cumulative incidence of COVID-19 in the United States using influenza surveillance, virologic testing, and mortality data: Four complementary approaches. - Fred S. Lu; André T. Nguyen; Nicholas B. Link; Mathieu Molina; Jessica T. Davis; Matteo Chinazzi; Xinyue Xiong; Alessandro Vespignani; Marc Lipsitch; Mauricio Santillana (PLoS Comput. Biol., 2021)