Safety and Immunogenicity of the Live Attenuated Varicella Vaccine in Vietnamese Children Aged 12 Months to 12 Years: An Open-Label, Single-Arm Bridging Study oleh Pham Van Hung, Le Thi Huong Giang, Phung Lam Toi, Vu Thi Minh Thuc, Bui Dang The Anh, Dinh Cong Pho, Pham Ngoc Hung