The Trifecta of Industry, Academic, and Health System Partnership to Improve Mental Health Care Through Smartphone-Based Remote Patient Monitoring: Development and Usability Study - C Neill Epperson; Rachel Davis; Allison Dempsey; Heinrich C Haller; David J Kupfer; Tiffany Love; Pamela M Villarreal; Mark Matthews; Susan L Moore; Kimberly Muller; Christopher D Schneck; Jessica L Scott; et al. (JMIR Formative Research)