Funding for this research was provided by:
Internal funds, KU Leuven (22/15/028)
Received: 31 December 2018
Accepted: 9 March 2020
First Online: 20 March 2020
Ethics approval and consent to participate
: The research was approved by the medical ethics committee of the Leuven University Hospitals (s59543). Written informed consent was obtained from all participants. If patients were cognitively impaired, informed consent by proxy was obtained from the guardian of the patient.
: Not applicable.
: Prof. Bernadette Dierckx de Casterlé is currently acting as an Associate Editor for BMC Geriatrics, and Prof. Koen Milisen is acting as a Section Editor for BMC Geriatrics. The other authors declare that they have no competing interests.