Citation: Tull, M., Lee, A., Geers, A., & Gratz, K. (2018). Exploring the role of sedentary behavior and physical activity in depression and anxiety symptom severity among patients with substance use disorders. Mental Health and Physical Activity, 14, 98-102. https://doi.org/10.1016/j.mhpa.2018.03.001. Link to publisher’s article.