van Blijswijk, Sophie C. E.
Blom, Jeanet W.
de Craen, Anton J. M.
den Elzen, Wendy P. J.
Gussekloo, Jacobijn
Funding for this research was provided by:
ZonMw (311060201)
Article History
Received: 30 August 2017
Accepted: 25 May 2018
First Online: 11 June 2018
Ethics approval and consent to participate
: The Medical Ethical Committee of Leiden University Medical Center approved the study (P09.096) in 2009. All participants provided a written informed consent. For participants with cognitive problems this was provided by a representative.
: The authors declare that they have no competing interests.
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