A National Health and Wellness SMS Text Message Program for Breast Cancer Survivors During COVID-19 (EMPOWER-SMS COVID-19): Mixed Methods Evaluation Using the RE-AIM Framework. - Singleton, Anna C; Raeside, Rebecca; Hyun, Karice K; Hayes, Molly; Sherman, Kerry A; Elder, Elisabeth; Redfern, Julie; Partridge, Stephanie R (Journal of Medical Internet Research, 2023)