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3. General recommendations on immunization—recommendations of the Advisory Committee on Immunization Practices (ACIP);Kroger;MMWR Surveill Summ,2011
4. Compliance with national immunization guidelines for children younger than 2 years, 1996–1999;Mell;Pediatrics,2005
5. Use of combination vaccines is associated with improved coverage rates;Marshall;Pediatr Infect Dis J,2007