Prevalence and Characterization of Gastroenteritis Viruses among Hospitalized Children during a Pilot Rotavirus Vaccine Introduction in Vietnam oleh Chu Thi Ngoc Mai, Le Thi Khanh Ly, Yen Hai Doan, Tomoichiro Oka, Le Thi Phuong Mai, Nguyen Tu Quyet, Tran Ngoc Phuong Mai, Vu Dinh Thiem, Lai Tuan Anh, Le Van Sanh, Nguyen Dang Hien, Dang Duc Anh, Umesh D. Parashar, Jacqueline E. Tate, Nguyen Van Trang