Mughini-Gras, Lapo
Pijnacker, Roan
Heusinkveld, Moniek
Enserink, Remko
Zuidema, Rody
Duizer, Erwin
Kortbeek, Titia
van Pelt, Wilfrid
Article History
Received: 12 October 2015
Accepted: 8 February 2016
First Online: 26 February 2016
Competing interests
: The authors declare no competing financial interests.