Received: 12 April 2018
Accepted: 13 June 2019
First Online: 19 June 2019
Ethics approval and consent to participate
: All participants signed an informed consent form. The study was approved by the medical ethics review board of Zuyderland Medical Center (Medisch Ethische Toetsings Commissie Zuyderland) under study number METC-16 N138.
: Not applicable.
: NJHWW is leading the development of a consultancy programme on hospital governance for Q! B.V., in which he holds a minority share. The other authors declare that they have no competing interests.