Vaccination policies and practices.
Henderson
D A
DA
School of Hygiene and Public Health, Johns Hopkins University, Baltimore, MD 21205-1901, USA.
D003140:Communicable Disease Control / Q000379:methods; D003362:Cost-Benefit Analysis; D014943:Global Health; D006291:Health Policy; D006801:Humans; D011159:Population Surveillance; D014611:Vaccination / Q000191:economics / Q000379:methods