1. Internet World Stats20142014-01-13Internet Usage Statistics: The Internet Big Picture - World Internet Users and 2014 Population Statshttp://www.internetworldstats.com/stats.htm6WHVX82M1
2. FoxSPew Internet & American Life Project20062014-07-12Online Health Search 2006http://www.pewinternet.org/files/old-media/Files/Reports/2006/PIP_Online_Health_2006.pdf.pdf6R0OwsHEC
3. FoxSPew Internet & American Life Project20112012-08-07Health Topicshttp://pewinternet.org/Reports/2011/HealthTopics.aspx6SnedkDik
4. FoxSJonesSPew Internet & American Life Project20092014-07-12The Social Life of Health Informationhttp://www.pewinternet.org/2009/06/11/the-social-life-of-health-information/6R0Q6Jqpa
5. McDaidDParkABupa20102014-09-23Online Health: Untangling the Webhttps://www.bupa.com.au/staticfiles/Bupa/HealthAndWellness/MediaFiles/PDF/LSE_Report_Online_Health.pdf6Snf9eDha