Immunization issues of the 21st century, part I.
Frenkel
Lawrence D
LD
D000367:Age Factors; D002648:Child; D002669:Child Welfare; D005544:Forecasting; D006801:Humans; D007114:Immunization / Q000639:trends*; D007223:Infant; D014765:Viral Vaccines / Q000008:administration & dosage; D014777:Virus Diseases / Q000517:prevention & control
D014765:Viral Vaccines