1. Powell GE, Seifert HA, Reblin T, Burstein PJ, Blowers J, Menius JA, et al. Social media listening for routine post-marketing safety surveillance [e-pub ahead of print]. Drug Saf. http://dx.doi.org/10.1007/s40264-015-0385-6; [Epub ahead of print].
2. Steakley L. How patients use social media to foster support systems, connect with physicians. Stanford Scope blog. Available at: http://scopeblog.stanford.edu/2011/04/20/how_patients_ar/. Accessed February 26, 2016.
3. Joe Niekro Foundation Support Groups. Available at: http://www.joeniekrofoundation.com/patient-caregiver-support/support-groups/ Accessed February 26, 2016.
4. Neurosurgeon launches £900,000 crowd-funding appeal. BBC News. Available at: http://www.bbc.com/news/uk-england-bristol-33009989. Accessed February 26, 2016.
5. Social network analysis in the study of terrorism and political violence;Perliger;PS Polit Sci Polit,2011