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Individuals who completed the survey participated anonymously, precluding written informed consent. Images of toenails utilized in the survey were obtained with written informed consent.","order":1,"name":"Ethics","label":"Ethics Approval and Consent to Participate","group":{"name":"EthicsHeading","label":"Declarations"}},{"value":"The authors declare that they do not have a conflict of interest.","order":2,"name":"Ethics","label":"Conflict of interest","group":{"name":"EthicsHeading","label":"Declarations"}},{"value":"This material is the result of work supported with resources and the use of facilities at VA Boston Healthcare System and the New England Geriatric Research Education and Clinical Center. The contents do not represent the views of the U.S. Department of Veterans Affairs or the United States Government. 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