Koelman, Liselot
Pivovarova-Ramich, Olga
Pfeiffer, Andreas F. H.
Grune, Tilman
Aleksandrova, Krasimira
Article History
Received: 15 March 2019
Accepted: 8 May 2019
First Online: 21 May 2019
Ethics approval and consent to participate
: The Ethics Committee of the Medical Association of the State of Brandenburg approved the study procedures and written informed consent was obtained from all participants.
: Not applicable.
: The authors declare that they have no competing interests.
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