RT Journal Article SR Electronic(1) A1 Castilla, J A1 Etxeberria, J YR 2010 T1 Authors' reply: Estimating the impact of the 2009 influenza A(H1N1) pandemic on mortality in the elderly in Navarre, Spain JF Eurosurveillance VO 15 IS 9 SP 19502 OP DO https://doi.org/10.2807/ese.15.09.19502-en UL https://www.eurosurveillance.org/content/10.2807/ese.15.09.19502-en