Voorwinden, Jan S
Buitenhuis, Anne H
Birnie, Erwin
Lucassen, Anneke M
Verkerk, Marian A
van Langen, Irene M
Plantinga, Mirjam
Ranchor, Adelita V
Article History
Received: 18 November 2016
Revised: 10 March 2017
Accepted: 5 April 2017
First Online: 3 May 2017
Competing interests
: The authors declare no conflict of interest.