Clinical diagnosis and assessment of severity of confirmed dengue in Vietnamese children. Is the World Health Organisation classification system helpful? (vol 70, pg 172, 2004) by My, N, Phuong, N, Ha, N, Mai, T, Anh, N, Luat, T, Endy, T, Cardosa, M, Tio, P, Charlieu, J, White, N, Farrar, J