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3. Notice to readers: updated recommendations on the use of pneumococcal conjugate vaccine: suspension of recommendation for third and fourth dose;CDC;MMWR Morb Mort Wkly Rep,2004
4. National, state, and urban area vaccination coverage among children aged 19–35 months—United States, 2003;CDC;MMWR Morb Mort Wkly Rep,2004
5. Postlicensure surveillance for pneumococcal invasive disease after use of heptavalent pneumococcal conjugate vaccine in Northern California Kaiser Permanente;Black;Pediatr Infect Dis J,2004