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