Article History
Received: 28 October 2019
Accepted: 20 January 2020
First Online: 25 January 2020
Compliance with Ethical Standards
:
: M. Harlander reports personal fees from AstraZeneca, Berlin-Chemie Menarini, Boehringer Ingelheim, Chiesi, GlaxoSmithKline, Novartis and Teva outside the submitted work. D. Lestan reports personal fees from Boehringer Ingelheim and Roche outside the submitted work. M. Turel reports personal fees from AstraZeneca, Berlin-Chemie Menarini, Boehringer Ingelheim, Chiesi, GlaxoSmithKline, Novartis and Teva outside the submitted work.