RT Journal Article SR Electronic T1 FeNO is associated with disease burden in the German Asthma Net severe asthma cohort JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP 2101233 DO 10.1183/13993003.01233-2021 A1 Christina Bal A1 Marco Idzko A1 Sabina Škrgat A1 Andrea Koch A1 Katrin Milger A1 Christian Schulz A1 Sonja Zehetmayer A1 Eckard Hamelmann A1 Roland Buhl A1 Stephanie Korn A1 collaborators from the German Asthma Net (GAN) YR 2022 UL http://erj.ersjournals.com/content/early/2022/02/15/13993003.01233-2021.abstract AB