Gigengack, Maj R.
Hein, Irma M.
Lindeboom, Robert
Lindauer, Ramón J. L.
Funding for this research was provided by:
Stichting Kinderpostzegels Nederland (7788085)
Article History
First Online: 24 June 2017
Compliance with Ethical Standards
: All procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1975, as revised in 2000. Informed consent was obtained from all patients for being included in the study.
: The authors declare no potential conflicts of interest.
: This study was supported by a grant of Stichting Kinderpostzegels Nederland (grant number 7788085).