1. World Health Organization. Atlas of eHealth Country Profiles 2015: The Use of eHealth in Support of Universal Health Coverage. Available at https://www.who.int/goe/publications/atlas_2015/en/. Accessed December 30, 2018.
2. The use of e-health and m-health tools in health promotion and primary prevention among older adults: a systematic literature review;Kampmeijer;BMC Health Serv. Res.,2016
3. Pew Research Center. Demographics of Mobile Device Ownership and Adoption in the United States. Available at http://www.pewinternet.org/fact-sheet/mobile/. Accessed December 28, 2018.
4. Health app use among US Mobile phone owners: a National Survey;Krebs;JMIR Mhealth Uhealth.,2015
5. Discovery of and interest in health apps among those with mental health needs: survey and focus group study;Schueller;J. Med. Internet Res.,2018