Funding for this research was provided by:
Federal Public Service Health, Food Chain Safety and Environment
Text and Data Mining valid from 2019-04-05
Received: 7 November 2018
Accepted: 4 March 2019
First Online: 5 April 2019
Ethics approval and consent to participate
: The study was conducted in accordance with the ethical principles for medical research involving human subjects (Declaration of Helsinki) and was approved by the Ethical Committee of the University of Ghent (Reference: 2013/1025) (Belgian Registration number: B670201319129). Written informed consent to participate in the study was obtained from participants or parent(s)/legal guardian(s) of participants younger than 12 years old.
: Not applicable.
: The authors declare that they have no competing interests.
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