What Are Health-Related Users Tweeting? A Qualitative Content Analysis of
Health-Related Users and Their Messages on Twitter
Joy L Lee, Matthew DeCamp, Mark Dredze, Margaret S Chisolm, Zackary D Berger
J Med Internet Res 2014 (Oct 15); 16(10):e237
HTML (open access): http://www.jmir.org/2014/10/e237/