Funding for this research was provided by:
Bundesministerium für Bildung und Forschung (FKZ 031L0140, 031L0140B)
Received: 2 January 2020
Accepted: 16 April 2020
First Online: 6 May 2020
Ethics approval and consent to participate
: As this was a purely retrospective analysis from clinical routine data, we obtained a waiver by the ethics committee because a formal review was seen as not necessary (EM_MR_greulich_130320).
: Not applicable.
: T.G reports personal fees from AstraZeneca, personal fees from Berlin-Chemie, personal fees from Boehringer-Ingelheim, personal fees from Chiesi, personal fees from CSL-Behring, grants and personal fees from Grifols, personal fees from GSK, personal fees from Novartis, grants from German Centre for Lung Research (DZL), Marburg, Germany (Deutsches Zentrum für Lungenforschung), outside the submitted work.P.A reports grants from German Federal Ministry of Education and Research (BMBF) Competence Network Asthma and COPD (ASCONET), grants from AstraZeneca GmbH, grants and non-financial support from Bayer Schering Pharma AG, grants, personal fees and non-financial support from Boehringer Ingelheim Pharma GmbH & Co. KG, grants and non-financial support from Chiesi GmbH, grants from GlaxoSmithKline, grants from Grifols Deutschland GmbH, grants from MSD Sharp & Dohme GmbH, grants and personal fees from Mundipharma GmbH, grants, personal fees and non-financial support from Novartis Deutschland GmbH, grants from Pfizer Pharma GmbH, grants from Takeda Pharma Vertrieb GmbH & Co. KG, outside the submitted work.C.V reports grants and personal fees from AstraZeneca, grants and personal fees from Boehringer Ingelheim, personal fees from CSL Behring, personal fees from Chiesi, grants and personal fees from GlaxoSmithKline, grants and personal fees from Grifols, personal fees from Menarini, personal fees from Mundipharma, grants and personal fees from Novartis, personal fees from Nuvaira, personal fees from OmniaMed, personal fees from MedUpdate, outside the submitted work;B.S, J. T, S. M, A. E and M. M declare that they have nothing to disclose.