Hansen, Heike http://orcid.org/0000-0003-4901-3091
Schäfer, Ingmar
Porzelt, Sarah
Kazek, Agata
Lühmann, Dagmar
Scherer, Martin
Funding for this research was provided by:
Association of Statutory Health Insurance Physicians of Hamburg and Schleswig-Holstein
Article History
Received: 24 February 2020
Accepted: 1 June 2020
First Online: 17 June 2020
Ethics approval and consent to participate
: The study was approved by the Ethics Commission of the Hamburg Medical Association on 12 August 2013 (file number PV 4535). All study participants gave their written informed consent prior to their participation in the study.
: Not applicable.
: The authors declare that they have no competing interests.