Thurlings, I
Martínez-López, L M
Westendorp, B
Zijp, M
Kuiper, R
Tooten, P
Kent, L N
Leone, G
Vos, H J
Burgering, B
de Bruin, A
Article History
Received: 13 November 2015
Revised: 21 April 2016
Accepted: 1 June 2016
First Online: 25 July 2016
Competing interests
: The authors declare no conflict of interest.