Received: 16 December 2018
Accepted: 16 July 2019
First Online: 24 July 2019
Ethics approval and consent to participate
: Data from the electronic registration systems were used anonymously. Information which does not relate to an identified or identifiable natural person does not fall under the European General Data Protection Regulation [CitationRef removed]. Patients were not submitted to any specific action or intervention for the study, measures and assessment procedure were part of usual care. Therefore, according to Dutch Law on Medical Ethics [CitationRef removed], no specific informed consent or a review of a Medical Ethics Committee was required.
: Not applicable, anonymized data were use.
: The authors declare that they have no competing interests.