Funding for this research was provided by:
University of Groningen
Article History
Received: 11 June 2018
Revised: 28 August 2018
Accepted: 10 September 2018
First Online: 27 September 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. Our local Medical Ethics Review Board (Medical Ethical Committee of the University Medical Center Groningen) waivered the need for formal extensive assessment by the committee.
: Informed consent and/or parental consent was obtained from all individual participants included in the study.