van Leeuwen, Janneke https://orcid.org/0000-0003-0454-2846
Koes, Bart W.
Paulis, Winifred D.
Bindels, Patrick J. E.
van Middelkoop, Marienke
Article History
Received: 18 June 2019
Accepted: 31 August 2020
First Online: 9 September 2020
Ethics approval and consent to participate
: The study has been approved by the Institutional Review Board of the Erasmus University Medical Center, Erasmus MC.Informed consent to participate was obtained from parents of all children and informed assent was obtained from children aged 12 years and older.
: Not applicable.
: The authors declare that they have no competing interests.