This paper is in the following e-collections/theme issues:

Mobile Health (mhealth)  mHealth for Wellness, Behavior Change and Prevention 

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Works citing "Assessing the Internal and External Validity of Mobile Health Physical Activity Promotion Interventions: A Systematic Literature Review Using the RE-AIM Framework"

Kacie CA Blackman, Jamie Zoellner, Leanna M Berrey, Ramine Alexander, Jason Fanning, Jennie L Hill, Paul A Estabrooks
J Med Internet Res 2013 (Oct 04); 15(10):e224 

According to Crossref, the following articles are citing this article (DOI 10.2196/jmir.2745):

(note that this is only a small subset of citations)

1. Franklin NC. Technology to Promote and Increase Physical Activity in Heart Failure. Heart Failure Clinics 2014; [CrossRef]
2. Whittemore R, Chao A, Jang M, Minges KE, Park C. Methods for knowledge synthesis: An overview. Heart & Lung: The Journal of Acute and Critical Care 2014;43(5):453 [CrossRef]