Funding for this research was provided by:
National Institute of Health and Disability Insurance (Not applicable)
Received: 12 January 2020
Accepted: 13 May 2020
First Online: 3 June 2020
Ethics approval and consent to participate
: The BELHES was approved by the Medical Ethics Committee of the University Hospital Ghent (registration number B670201834895) and was carried out in line with recommendations of the Belgian Privacy Commission. All participants have signed a consent form that was approved by the Medical Ethics Committee.
: Not applicable.
: The authors declare that they have no competing interests.