ter Horst, K W
Gilijamse, P W
Koopman, K E
de Weijer, B A
Brands, M
Kootte, R S
Romijn, J A
Ackermans, M T
Nieuwdorp, M
Soeters, M R
Serlie, M J
Article History
Received: 4 March 2015
Revised: 23 June 2015
Accepted: 2 July 2015
First Online: 9 July 2015
Competing interests
: The authors declare no conflict of interest.