title: 500m dollars investment in poor countries' health systems will boost vaccination.
authors.forename: John
authors.initials: J
authors.lastname: Zarocostas
mesh_terms: D003906:Developing Countries; D006296:Health Services / Q000191:economics*; D006801:Humans; D017589:Immunization Programs / Q000191:economics; D007449:Investments; D014611:Vaccination / Q000191:economics*