Funding for this research was provided by:
Lunge Zürich (xxxxx)
Lungenliga Schweiz (xxxx)
Received: 5 November 2019
Accepted: 25 August 2020
First Online: 15 September 2020
Ethics approval and consent to participate
: All participants provided written informed consent to participate in the study. If patients were < 18 years old, written parental consent has been obtained. All procedures were reviewed and approved by the Cantonal Ethics Committee Zurich (registration number KEK-ZH- 2015-0144) and conformed to the Declaration of Helsinki.
: Not applicable.