Valentijn, Linda J
Koster, Jan
Zwijnenburg, Danny A
Hasselt, Nancy E
van Sluis, Peter
Volckmann, Richard
van Noesel, Max M
George, Rani E
Tytgat, Godelieve A M
Molenaar, Jan J
Versteeg, Rogier
Article History
Received: 11 June 2015
Accepted: 9 October 2015
First Online: 2 November 2015
Competing interests
: The authors declare no competing financial interests.