Validation of Amazon Halo Movement: a smartphone camera-based assessment of movement health. - Michael Fanton; Yaar Harari; Matthew Giffhorn; Allie Lynott; Eli Alshan; Jonathan Mendley; Madeline Czerwiec; Rebecca Macaluso; Ianir A. Ideses; Eduard Oks; Arun Jayaraman (npj Digit. Medicine, 2022)