RT Journal Article SR Electronic T1 Negative association between fatigue and signs of sleep apnoea in patients after COVID-19 JF ERJ Open Research JO erjor FD European Respiratory Society SP 00289-2022 DO 10.1183/23120541.00289-2022 VO 8 IS 4 A1 Markus C. Hayden A1 Gabriele Schwarzl A1 Matthias Limbach A1 Sorin Mitrea A1 Michael Schuler A1 Dennis Nowak A1 Konrad Schultz YR 2022 UL http://openres.ersjournals.com/content/8/4/00289-2022.abstract AB