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Authors
Merckx, Joanna https://orcid.org/0000-0001-9426-8259
Crèvecoeur, Jonas
Proesmans, Kristiaan
Hammami, Naïma
Denys, Hilde
Hens, Niel
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Article History
Received: 21 December 2021
Accepted: 21 September 2022
First Online: 15 October 2022
Declarations
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: This study provides aggregate anonymized data. Ethical approval was not considered for this research and the data were provided by the Ministry of Education and Sciensano following, for the latter, a data request by the study team at the address of Sciensano. The study was performed in accordance with relevant guidelines and regulations (Declaration of Helsinki).
: Not applicable.
: The authors declare no competing interests.
