Raak, Christa
Scharbrodt, Wolfram
Berger, Bettina
Büssing, Arndt
Geißen, René
Ostermann, Thomas
Article History
Received: 20 April 2017
Accepted: 9 April 2018
First Online: 25 April 2018
Ethics approval and consent to participate
: This trial has received ethical approval and has been reviewed by the Federal Institute for Drugs and Medical Devices (BfArM, Bundesinstitut für Arzneimittel und Medizinprodukte). All participants provide informed consent if they are interested in participating. Declaration of consent can be withdrawn at any time of the trial without giving reasons.
: The authors declare that they have no competing interests.
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