Text and Data Mining valid from 2018-04-19
Received: 2 November 2017
Accepted: 28 March 2018
First Online: 19 April 2018
Ethics approval and consent to participate
: The study protocol was assessed by the regional Medical Ethical Committee (Medisch Ethische Toetsings Commissie Zuidwest Holland (METCZH); no. METCZWH 12–083). Ethical approval was waived by the METCZH on basis of the Dutch Medical Research Involving Human Subjects Act (WMO). Written informed consent was obtained from all study participants.
: Not applicable
: The authors declare that they have no competing interest.
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