Ducommun, Julien
Bornstein, Michael M.
Wong, May Chun Mei
von Arx, Thomas
Article History
Received: 2 November 2017
Accepted: 20 September 2018
First Online: 4 October 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: The study protocol has been approved by the standing ethics committee of the State of Bern (approval number KEK-BE 361/15). The study has therefore been performed in accordance with the ethical standards laid down in the 1964 Declaration of Helsinki and its later amendments.
: Informed consent was obtained from all individual participants included in the study.