Digital biomarkers from geolocation data in bipolar disorder and schizophrenia: a systematic review. - Paolo Fraccaro; Anna L. Beukenhorst; Matthew Sperrin; Simon Harper; Jasper Palmier-Claus; Shôn Lewis; Sabine N. van der Veer; Niels Peek (J. Am. Medical Informatics Assoc., 2019)