1. Huang, C.; Wang, Y.; Li, X.; Ren, L.; Zhao, J.; Hu, Y.; Zhang, L.; Fan, G.; Xu, J.; Gu, X.; et al. Clinical features of patients infected with 2019 novel coronavirus in Wuhan, China. Lancet 2020, 395, 497–506. [CrossRef]
2. Poggiali, E.; Zaino, D.; Immovilli, P.; Rovero, L.; Losi, G.; Dacrema, A.; Nuccetelli, M.; Vadacca, G.B.; Guidetti, D.; Vercelli, A.; et al. Lactate dehydrogenase and C-reactive protein as predictors of respiratory failure in COVID-19 patients. Clin. Chim. Acta 2020, 509, 135–138. [CrossRef] [PubMed]
3. Ponti, G.; Maccaferri, M.; Ruini, C.; Tomasi, A.; Ozben, T. Biomarkers associated with COVID-19 disease progression. Crit. Rev. Clin. Lab. Sci. 2020, 398–399. [CrossRef]
4. Han, H.; Ma, Q.; Li, C.; Liu, R.; Zhao, L.; Wang, W.; Zhang, P.; Liu, X.; Gao, G.; Liu, F.; et al. Profiling serum cytokines in COVID-19 patients reveals IL-6 and IL-10 are disease severity predictors. Emerg. Microbes Infect. 2020, 9, 1123–1130. [CrossRef] [PubMed]
5. Terpos, E.; Ntanasis-Stathopoulos, I.; Elalamy, I.; Kastritis, E.; Sergentanis, T.N.; Politou, M.; Psaltopoulou, T.; Gerotziafas, G.; Dimopoulos, M.A. Hematological findings and complications of COVID-19. Am. J. Hematol. 2020, 95, 834–847. [CrossRef] [PubMed]
6. Sharma, A. Inferring molecular mechanisms of dexamethasone therapy in severe COVID-19 from existing transcriptomic data. Gene 2021, 788, 145665. [CrossRef] [PubMed]
7. Luo, P.; Liu, Y.; Qiu, L.; Liu, X.; Liu, D.; Li, J. Tocilizumab treatment in COVID-19: A single center experience. J. Med. Virol. 2020, 92, 814–818. [CrossRef] [PubMed]
8. Herold, T.; Jurinovic, V.; Arnreich, C.; Lipworth, B.J.; Hellmuth, J.C.; von Bergwelt-Baildon, M.; Klein, M.; Weinberger, T. Elevated levels of IL-6 and CRP predict the need for mechanical ventilation in COVID-19. J. Allergy Clin. Immunol. 2020, 146, 128–136.e4. [CrossRef] [PubMed]
9. Zhu, Z.; Cai, T.; Fan, L.; Lou, K.; Hua, X.; Huang, Z.; Gao, G. Clinical value of immune-inflammatory parameters to assess the severity of coronavirus disease 2019. Int. J. Infect. Dis. 2020, 95, 332–339. [CrossRef] [PubMed]
10. Liu, F.; Li, L.; Xu, M.; Wu, J.; Luo, D.; Zhu, Y.; Li, B.; Song, X. Prognostic value of IL-6, CRP, and PCT in patients with COVID-19. J Clin Virol. 2020, 127, 104370. [CrossRef] [PubMed]
11. Hu, B.; Huang, S.; Yin, L. The cytokine storm and COVID-19. J. Med. Virol. 2021, 93, 250–256. [CrossRef] [PubMed]
12. Paces, J.; Strizova, Z.; Smrz, D.; Cerny, J. COVID-19 and the Immune System. Physiol. Res. 2020, 9973, 379–388. [CrossRef] [PubMed]
13. Jamilloux, Y.; Henry, T.; Belot, A.; Viel, S.; Fauter, M.; El, T.; Walzer, T.; François, B.; Sève, P. Should we suppress or stimulate immune responses for COVID-19. Autoimmun. Rev. 2020, 19, 102567. [CrossRef] [PubMed]
14. Pasin, L.; Navalesi, P.; Zangrillo, A.; Kuzovlev, A.; Fresilli, S. Corticosteroids for Patients With Coronavirus Disease 2019 (COVID-19) With Different Disease Severity: A Meta-Analysis of Randomized Clinical Trials. J. Cardiothorac. Vasc. Anesth. 2020, 35, 578–584. [CrossRef] [PubMed]
15. Mcgonagle, D.; Sharif, K.; Regan, A.O.; Bridgewood, C. The role of cytokines including IL-6 in COVID-19 induced pneumonia and MAS-like disease. Autoimmun. Rev. 2020, 19, 102537. [CrossRef] [PubMed]
16. Nakamura, M.; Hitosugi, M. Emerging COVID-19-related deaths during home recuperation in Japan. Geriatr. Gerontol. Int. 2021, 3–4. [CrossRef]