Received: 26 July 2019
Accepted: 11 September 2019
First Online: 12 November 2019
Ethics approval and consent to participate
: The ethics committee of the University of Heidelberg approved this retrospective study. Due to the retrospective nature of this analysis and according to the vote of the ethics committee, written informed consent could not be obtained by the patients but patient records / information were anonymized and de-identified prior to analysis.
: Not applicable
: S.E. Torrisi reports grants from Boehringer Ingelheim and F Hoffman La-Roche, outside the submitted work. J. Wälscher reports fees for consulting from Boehringer Ingelheim and Roche/InterMune, outside the submitted work. C. Vancheri reports grants and speaker’s fees from Boehringer Ingelheim and Intermune/F Hoffman La-Roche, outside the submitted work. M. Kreuter reports grants and fees for consulting from Boehringer Ingelheim and Roche/InterMune, outside the submitted work. The other authors report no conflicts of interest.