Funding for this research was provided by:
FOD Volksgezondheid, Veiligheid van de Voedselketen en Leefmilieu (RT17/1, RT11/5)
Fonds Wetenschappelijk Onderzoek (1S37119N, 1104320N)
Article History
Received: 17 May 2019
Accepted: 8 January 2020
First Online: 29 January 2020
Ethics approval and consent to participate
: Not applicable.
: Not applicable.
: The authors declare that they have no competing interests.