Wilson, A., Welch, R. J., Hashibe, M., Greenwood, J., Jackson, B. and She, R. C. (2014) “Surveillance of Human Papilloma Virus Using Reference Laboratory Data for the Purpose of Evaluating Vaccine Impact”, Online Journal of Public Health Informatics, 6(3). doi: 10.5210/ojphi.v6i3.5593.