title: Principles for using combination vaccines.
mesh_terms: D005194:Family Practice; D006801:Humans; D007115:Immunization Schedule; D007223:Infant; D007231:Infant, Newborn; D010372:Pediatrics; D017410:Practice Guidelines as Topic; D012955:Societies, Medical; D014481:United States; D017778:Vaccines, Combined / Q000008:administration & dosage*