The efficacy of live attenuated, cold-adapted, trivalent, intranasal influenzavirus vaccine in children. - Belshe RB; Mendelman PM; Treanor J; King J; Gruber WC; Piedra P; Bernstein DI; Hayden FG; Kotloff K; Zangwill K; Iacuzio D; Wolff M (New England Journal of Medicine, 1998)