Hens, W.
Vissers, D.
Annemans, L.
Gielen, J.
Van Gaal, L.
Taeymans, J.
Verhaeghe, N.
Article History
Received: 29 December 2017
Accepted: 13 June 2018
First Online: 30 July 2018
Ethics approval and consent to participate
: This study was approved by the ethics committee of the University Hospital of Antwerp (number: 14/17/205 -ref: 7543075363). All participants gave written informed consent before data collection began.
: Not applicable.
: The authors declare that they have no competing interests.
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