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Article History

Received: 23 May 2018

Accepted: 2 November 2018

First Online: 14 November 2018

Ethics approval and consent to participate

: The study will be conducted according to the principles of the Declaration of Helsinki (amended in October 2013), in accordance with the Medical Research Involving Human Subjects Act (WMO), the Guideline for Good Clinical Practice (May 1996), and in full conformity to any applicable state or local regulations. The study has been approved by the Medical Ethics Committee of the Leiden University Medical Center (ref. number P17.051). Written consent to participate will be obtained from the legal representative by mail and once more verified by telephone. Once the researcher or research nurse has assured him/herself that the right person has signed the form, and that questions (if present) have been answered, then he/she also signs the consent form. A copy is added to the medical record of the patient in the nursing home.

: Not applicable.

: The authors declare that they have no competing interests.

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