Funding for this research was provided by:
Bijzonder Onderzoeksfonds (01N01616)
Received: 22 February 2019
Accepted: 7 May 2019
First Online: 15 June 2019
Ethics approval and consent to participate
: This study was approved by the Research Ethical Committee of Ghent University Hospital, Ghent, Belgium (project number 2017/0129). Written informed consent is obtained from all participants prior to enrolment.
: Not applicable.
: Dr. Janssens and Prof. Clays are members of the editorial board (Associate Editors) of BMC Public Health, but had no role in the editorial process. All the authors declare that they have no competing interests.
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