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References:
Harmonized Childhood Immunization Schedule
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CDC.
Recommended childhood immunization schedule- U.S., Jan-Dec 1998 MMWR
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1998;
47:10-1
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CDC.
Recommended childhood immunization schedule- U.S., Jan-Dec 1998 MMWR
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1999;
48:14-5
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CDC.
Recommended childhood immunization schedule- U.S., Jan-Dec 1998 MMWR
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2000;
49:36-7
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