“Elite users” on Twitter: Examining key features for crafting future HPV vaccination communication campaigns
Philip Massey, PhD, MPH1, Amy Leader, DrPH, MPH2, Alan Black3, Alexandra Budenz, MA, DrPH3, Kara Fisher, MPH3, Elizabeth DeArmas2 and Ann C. Klassen, PhD1
(1)Drexel University Dornsife School of Public Health, Philadelphia, PA, (2)Thomas Jefferson University, Philadelphia, PA, (3)Drexel University, Philadelphia, PA