Funding for this research was provided by:
Ministerie van Volksgezondheid, Welzijn en Sport (not applicable)
Text and Data Mining valid from 2019-04-15
Received: 4 October 2018
Accepted: 3 April 2019
First Online: 15 April 2019
Ethics approval and consent to participate
: This study has been approved by the medical ethics committee (METC) Noord-Holland (NL50227.094.14), and is conducted according to the principles of the Declaration of Helsinki. Written informed consent was obtained from all participants.
: Not applicable.
: The authors declare that they have no competing interests.
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