Genomic Epidemiology of SARS-CoV-2 Infection During the Initial Pandemic Wave and Association With Disease Severity. - Esper FP; Cheng YW; Adhikari TM; Tu ZJ; Li D; Li EA; Farkas DH; Procop GW; Ko JS; Chan TA; Jehi L; Rubin BP; et al. (JAMA network open, 2021)