Martins, Miguel R.
Franzen, Rene
Depraet, Frederick
Gutknecht, Norbert
Article History
Received: 26 June 2017
Accepted: 21 December 2017
First Online: 15 January 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: Informed consent (Helsinki Declaration, revised in Edinburgh) was obtained from all individual participants included in the study.