Vogel, P.
Vogel, D. H. V.
Article History
Received: 22 October 2018
Accepted: 7 January 2019
First Online: 23 January 2019
Ethics approval and consent to participate
: Informed consent was obtained from all participants of the study and the study obtained ethics approval from the ethics commission for medicine at the Justus Liebig University Giessen (Ethik-Kommission des Fachbereichs Medizin der Justus-Liebig-Universität Gießen) (reference number: AZ 9318) in accordance with the Declaration of Helsinki.
: Not applicable.
: The authors declare that they have no competing interests.
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