The Rules
- 2005 Childhood & Adolescent Immunization Schedules and Rules - CDC and IAC
- www.cdc.gov/nip/recs/child-schedule.htm
- www.immunize.org/nslt.d/n17/rules1.htm
- 4-day Grace Period - MMWR Vol. 5. RR-2, February 8, 2002
- www.cdc.gov/nip/publications/gen-recs.htm#2
- Recommended childhood immunization schedule -- US, January 1995
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aepo-xdv-www.epo.cdc.gov/wonder/prevguid/m0038256/m0038256.asp#Table_1
