title: The power of historical data for assessment of childhood vaccine benefits.
authors.affiliation: Department of Public Health, University of Copenhagen, Copenhagen, Denmark; Institut for Folkesundhedsvidenskab, Københavns Universitet, 1353 København K, Denmark. Electronic address: simonsen@sund.ku.dk.
authors.forename: Lone
authors.initials: L
authors.lastname: Simonsen
authors.affiliation: Fogarty International Center, National Institutes of Health, Bethesda, MD, USA.
authors.forename: Cécile
authors.initials: C
authors.lastname: Viboud
mesh_terms: D006801:Humans; D017589:Immunization Programs; D014612:Vaccines
chemical_list: D014612:Vaccines