Efficacy of a Mobile Health–Based Behavioral Treatment for Lifestyle Modification in Type 2 Diabetes Self-Management: Greenhabit Randomized Controlled Trial - Ana Maria Ruiz-Leon; Rosa Casas; Sara Castro-Barquero; Sofia Alfaro-González; Petia Radeva; Emilio Sacanella; Francesc Casanovas-Garriga; Ainhoa Pérez-Gesalí; Ramon Estruch (Journal of Medical Internet Research)