RT Journal Article SR Electronic(1) A1 Akehurst, C YR 1998 T1 Trial of intranasal influenza vaccine in children JF Weekly releases (1997–2007) VO 2 IS 21 SP 1214 OP DO https://doi.org/10.2807/esw.02.21.01214-en UL https://www.eurosurveillance.org/content/10.2807/esw.02.21.01214-en