evidence: - Mouliou, D.S.; Gourgoulianis, K.I. False-Positive and False-Negative COVID-19 Cases: Respiratory Prevention and Management Strategies, Vaccination, and Further Perspectives. Expert Rev. Respir. Med. 2021, 15, 993–1002. [Google Scholar] [CrossRef] [PubMed] [...] - Molnar, D.S.; Moore, J.; O’Leary, D.D.; MacNeil, A.J.; Wade, T.J. Perfectionistic Cognitions, Interleukin-6, and C-Reactive Protein: A Test of the Perfectionism Diathesis Stress Model. Brain Behav. Immun. Health 2021, 13, 100211. [Google Scholar] [CrossRef] [...] - Heng, K.Y.C.; Lee, J.H.; Thomas, T. Anti-N-Methyl-D-aspartate Receptor Encephalitis Masquerading as Fever of Unknown Origin. Clin. Case Rep. 2021, 9, 2323–2327. [Google Scholar] [CrossRef] [PubMed]