van den Broek, Medard F. M.
Rijks, Ester B. G.
Nikkels, Peter G. J.
Wolters, Victorien M.
van Es, Robert J. J.
van Santen, Hanneke M.
van Nesselrooij, Bernadette P. M.
Vriens, Menno R.
van Leeuwaarde, Rachel S.
Valk, Gerlof D.
Verrijn Stuart, Annemarie A. http://orcid.org/0000-0002-3999-8854
Article History
Received: 30 October 2020
Accepted: 1 January 2021
First Online: 21 January 2021
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: This study was performed in line with the principles of the Declaration of Helsinki. The Institutional Review Board of the UMCU approved this study.
: Written informed consent was obtained from parents (patients aged <12 years), patients themselves (aged ≥16 years) or both (patients aged 12–16 years).