Host heterogeneity and epistasis explain punctuated evolution of SARS-CoV-2. - Bjarke Frost Nielsen; Chadi M. Saad-Roy; Yimei Li; Kim Sneppen; Lone Simonsen; Cécile Viboud; Simon A. Levin; Bryan T. Grenfell (PLoS Comput. Biol., 2023)