1. Medication Compliance and Persistence: Terminology and Definitions
2. World Health Organization2003Adherence to Long-Term Therapiesvidence for Action
http://apps.who.int/iris/bitstream/10665/42682/1/9241545992.pdf
3. Issues in mHealth: Findings From Key Informant Interviews
4. Statista2016-05-01Smartphone users worldwide 2014-2019
http://www.statista.com/statistics/330695/number-of-smartphone-users-worldwide/
5. Research2guidanceResearch2guidance20142016-04-30Fourth annual study on mHealth app publishing
http://research2guidance.com/r2g/research2guidance-mHealth-App-Developer-Economics-2014.pdf