Ceulemans, Michael http://orcid.org/0000-0002-4130-5869
Van Calsteren, Kristel
Allegaert, Karel
Foulon, Veerle
Article History
Received: 22 October 2018
Accepted: 20 February 2019
First Online: 4 March 2019
Compliance with ethical standards
: Ethical approval was granted from the local Medical Ethics committee, and the study was conducted in accordance with all applicable subject privacy requirements and ethical principles outlined in the Declaration of Helsinki. Written informed consent was obtained from all individual participants in the study.
: The authors declare that they have no conflict of interest.