12. Ferreira-Gomes M, Kruglov A, Durek P, Heinrich F, Tizian C, Heinz GA, et al. SARS-CoV-2 in severe COVID- induces a TGF-β-dominated chronic immune response that does not target itself. Nat Commun. 2021;12(1):1961. Epub 20210330. doi: 10.1038/s41467-021-22210-3. PubMed PMID: 33785765; PubMed Central PMCID: PMCPMC8010106.