Are there any association between COVID-19 severity and immunosuppressive therapy?

Are there any association between COVID-19 severity and immunosuppressive therapy? Immunol Lett. 2020 May 28;: Authors: Hormati A, Ghadir MR, Zamani F, Khodadadi J, Khodadust F, Afifian M, Aminnejad R, Ahmadpour S PMID: 32473971 [PubMed - as supplied by publisher]
Source: Immunology Letters - Category: Allergy & Immunology Authors: Tags: Immunol Lett Source Type: research