Funding for this research was provided by:
INTERREG project EurHealth-1Health (202085)
Received: 21 December 2017
Accepted: 4 April 2018
First Online: 19 April 2018
Ethics approval and consent to participate
: The institutional medical ethical review board of the University Medical Center Groningen approved the use of retrospective patient data for our study and waived informed consent (METc2015/033; Februari 13, 2015). Consent to participate was obtained from all included patients.
: Consent for publication was obtained from all patients from whom the manuscript contains individual personal data.
: The authors declare that they have no competing interests.
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