Applying Multiple Data Collection Tools to Quantify Human Papillomavirus Vaccine Communication on Twitter

Philip M Massey   ^{1 *} , MPH, PhD ;   Amy Leader   ^{2 *} , MPH, DrPH ;   Elad Yom-Tov   ^{3 *} , MSc, PhD ;   Alexandra Budenz   ^{1 *} , MA ;   Kara Fisher   ^{4 *} , MPH ;   Ann C Klassen   ^{1 *} , PhD

¹ Dornsife School of Public Health, Department of Community Health and Prevention, Drexel University, Philadelphia, PA, United States

² Division of Population Science, Department of Medical Oncology, Thomas Jefferson University, Philadelphia, PA, United States

³ Microsoft Research Israel, Herzeliya, Israel

⁴ Dornsife School of Public Health, Department of Biostatistics and Epidemiology, Drexel University, Philadelphia, PA, United States

*all authors contributed equally