Funding for this research was provided by:
Dr. Werner Jackstädt-Stiftung (Date_09072014)
Novartis Pharma (Date_26112014)
Article History
Received: 14 January 2019
Accepted: 29 August 2019
First Online: 6 September 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: The study was approved by the responsible ethics committee of the University of Wuppertal prior to beginning of the study. All participants were informed about anonymity and voluntarily participation. Participants, who chose the paper–pencil or online version of our questionnaire, provided their implicit informed consent during the recruitment phase by agreeing to participate and by sending back the anonymous questionnaire. Respondents answering via personal telephone interview gave explicit informed consent during the recruitment phase by agreeing to participate and providing a telephone number for a re-call. The personally identifying information was not stored and participant responses were anonymized prior to analysis.