Funding for this research was provided by:
Alzheimer Nederland (.)
Received: 14 February 2020
Accepted: 4 June 2020
First Online: 12 June 2020
Ethics approval and consent to participate
: The PREVEND study was approved by the medical ethics committee (METc) of University Medical Center Groningen, Groningen, the Netherlands, and conducted in accordance with the guidelines of the Helsinki declaration. All participants gave written informed consent at baseline and agreed to follow-up over time. People who were not able to understand the invitation letter and submit a urine sample in the screening phase (due to cognitive impairment or other reasons) were considered incapable of giving informed consent and excluded. People who did not understand questions or instructions at follow-up were also considered incapable in regard to informed consent and consequently excluded from further participation.
: Not applicable.
: The authors declare that they have no competing interests.