Fernández-de-las-Peñas C, Torres-Macho J, Ruiz-Ruigómez M, Arrieta-Ortubay E, Rodríguez-Rebollo C, Akasbi-Moltalvo M et al. Presence of SARS-CoV-2 RNA in COVID-19 survivors with post-COVID symptoms 2 years after hospitalization: The VIPER study. Journal of Medical Virology. 2024 maj;96(5):e29676. Epub 2024 maj 15. doi: 10.1002/jmv.29676