RT Journal Article SR Electronic T1 Exercise-Induced Desaturations and Functional Limitation in Post-COVID-19 Lung Disease: Cause or Correlate? JF Respiratory Care FD American Association for Respiratory Care SP 1783 OP 1785 DO 10.4187/respcare.09621 VO 66 IS 11 A1 Kai E Swenson A1 Richard M Schwartzstein YR 2021 UL http://rc.rcjournal.com/content/66/11/1783.abstract AB