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2. Trends in obesity among adults in the United States, 2005 to 2014;Flegal;JAMA,2016
3. 2008 Physical Activity Guidelines for Americans: Fact Sheet for Health Professionals on Physical Activity Guidelines for Adults;Centers for Disease Control and Prevention,2008
4. Technology Device Ownership: 2015;Anderson,2015
5. Report: Health Care Apps Available in US Top 165,000;Murphy,2015