Powell, G. A., Zinszer, K., Verma, A. D., Madoff, L. C., Bahk, C., Brownstein, J. S., & Buckeridge, D. (2016). Monitoring Media Content About Vaccines in the United States: Data from the Vaccine Sentimeter. Online Journal of Public Health Informatics, 8(1). https://doi.org/10.5210/ojphi.v8i1.6487