Received: 31 May 2019
Accepted: 19 August 2019
First Online: 5 September 2019
Ethics approval and consent to participate
: The study was evaluated as non-WMO research, and its execution was approved by the institutional medical ethical committee (N16.114; Máxima Medical Center, Veldhoven, The Netherlands). All participants gave written informed consent.
: Not applicable
: The authors declare that they have no competing interests.