Article History
Received: 6 February 2019
Accepted: 20 June 2019
First Online: 5 July 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: The study has been approved by the local Medical Ethics Committee (United Committees of Human Research, Nieuwegein, the Netherlands; reference number: NL43192.100.13).
: Written informed consent was obtained from all participants.