Nijman, Ruud G
Vergouwe, Yvonne
Moll, Henriƫtte A
Smit, Frank J
Weerkamp, Floor
Steyerberg, Ewout W
van der Lei, Johan
de Rijke, Yolanda B
Oostenbrink, Rianne
Article History
Received: 15 November 2016
Accepted: 16 July 2017
First Online: 8 November 2017
Competing interests
: The authors declare no conflict of interest.