Seroprevalence as an Indicator of Undercounting of COVID-19 Cases in a Large Well-Described Cohort. - Taylor KM; Ricks KM; Kuehnert PA; Eick-Cost AA; Scheckelhoff MR; Wiesen AR; Clements TL; Hu Z; Zak SE; Olschner SP; Herbert AS; Bazaco SL; et al. (AJPM focus, 2023)