Clément, Celina
Lin, Jihong
Stangier, Ulrich
Article History
Received: 18 December 2018
Accepted: 15 November 2019
First Online: 19 December 2019
Ethics approval and consent to participate
: This study has been approved by the Ethics Committee of Goethe University Frankfurt. Informed consent will be obtained from all study participants.
: Consent for publication is obtained from every participant in this study. The consent form was approved by the Ethics Committee of Goethe University Frankfurt.
: The authors declare that they have no competing interests.