Sangar, V. C., B. B. Ghongane, and A. Chowdhary. “POST-MARKETING PASSIVE SURVEILLANCE OFBIVALENT AND QUADRIVALENT HUMAN PAPILLOMAVIRUS RECOMBINANT VACCINES”. International Journal of Pharmacy and Pharmaceutical Sciences, vol. 7, no. 4, Apr. 2015, pp. 393-7, https://journals.innovareacademics.in/index.php/ijpps/article/view/5798.