title: Improving immunization strategies in developed countries.
authors.affiliation: University Children's Hospital, P.O Box, CH-4005, Basel, Switzerland. schaad@ybaclu.unibas.ch
authors.forename: U B
authors.initials: UB
authors.lastname: Schaad
mesh_terms: D019049:Developed Countries; D005060:Europe; D006801:Humans; D007114:Immunization; D009656:North America; D012307:Risk Factors; D014612:Vaccines / Q000009:adverse effects*
chemical_list: D014612:Vaccines