RT Journal Article SR Electronic T1 The paradox of immunosuppressants and COVID-19 JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP 2102828 DO 10.1183/13993003.02828-2021 VO 59 IS 4 A1 Guang-Shing Cheng A1 Scott E. Evans YR 2022 UL http://erj.ersjournals.com/content/59/4/2102828.abstract AB