te Boome, L C J
Mansilla, C
van der Wagen, L E
Lindemans, C A
Petersen, E J
Spierings, E http://orcid.org/0000-0001-9441-1019
Thus, K A
Westinga, K
Plantinga, M
Bierings, M
Broers, A E C
Cuijpers, M L H
van Imhoff, G W
Janssen, J J
Huisman, C
Zeerleder, S
Huls, G
Boelens, J J
Wulffraat, N M
Slaper-Cortenbach, I C M
Kuball, J
Article History
Received: 23 December 2014
Revised: 26 March 2015
Accepted: 30 March 2015
First Online: 3 April 2015
Competing interests
: The authors declare no conflict of interest.