Unobtrusive inference of diurnal rhythms from smartphone data. - Loran Knol; Mindy K. Ross; Anisha Nagpal; Andrew P. Burns; Zachery Morrissey; Faraz Hussain 002; Tory A. Eisenlohr-Moul; Christian F. Beckmann; Alex D. Leow; Andre F. Marquand (npj Digit. Medicine, 2026)