Funding for this research was provided by:
Text and Data Mining valid from 2018-12-01
Received: 15 February 2018
Accepted: 19 December 2018
First Online: 29 December 2018
Ethics approval and consent to participate
: Since the study had an observational design and patient information was obtained anonymously, the Medical Ethical Committee of the Maastricht University exempted the study from further ethics review and informed consent (METC 14–5-083).
: Not applicable.
: The authors declare that they have no competing interests.
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