RT Journal Article SR Electronic T1 Timing of Tocilizumab Use and COVID-19 JF Respiratory Care FD American Association for Respiratory Care SP 381 OP 382 DO 10.4187/respcare.09678 VO 67 IS 3 A1 Mungmunpuntipantip, Rujittika A1 Wiwanitkit, Viroj YR 2022 UL http://rc.rcjournal.com/content/67/3/381.1.abstract AB