Ramli, Y., S. R. A, and A. Akib. “Seroconversion and Adverse Reaction of Live-Attenuated (OKA Strain) Varicella Vaccine”. Paediatrica Indonesiana, Vol. 43, no. 5, Sept. 2016, pp. 171-6, doi:10.14238/pi43.5.2003.171-6.