Sundoro, J., National Commission for Adverse Event Following Immunization (AEFI), Jakarta, Indonesia; Prayitno, A., Department of Child Health, Faculty of Medicine, Universitas Indonesia, Cipto Mangunkusumo Hospital, Jakarta, Indonesia; Satari, H.I., National Commission for Adverse Event Following Immunization (AEFI), Jakarta, Indonesia, Department of Child Health, Faculty of Medicine, Universitas Indonesia, Cipto Mangunkusumo Hospital, Jakarta, Indonesia; Djelantik, I.G.G., Provincial Commission for Adverse Event Following Immunization (AEFI), West Nusa Tenggara, Indonesia; Fletcher, M.A., Emerging Markets Region, Medical Affairs, Pfizer Inc, Paris, France; Hadinegoro, S.R., Department of Child Health, Faculty of Medicine, Universitas Indonesia, Cipto Mangunkusumo Hospital, Jakarta, Indonesia, Indonesian Technical Advisory Group on Immunization (ITAGI), Jakarta, Indonesia; Syafriyal, Immunization Subdivision, Directorate General of Disease Prevention and Control, Ministry of Health of the Republic of Indonesia, Jakarta, Indonesia