Funding for this research was provided by:
Text and Data Mining valid from 2019-11-06
Received: 25 March 2019
Accepted: 31 October 2019
First Online: 6 November 2019
Ethics approval and consent to participate
: The study was carried out according to the precepts of the Helsinki Declaration, Dutch legislation on privacy and the regulations of the Dutch Data Protection Authority. Patients and relatives gave written informed consent before study participation. The study protocol was reviewed by the Medical Ethics Committee of the VU University Medical Center and they concluded that, according to Dutch legislation, approval by a Medical Ethics Committee was not obligatory for this study.
: Not applicable.
: The authors declare that they have no competing interests.