PT - JOURNAL ARTICLE AU - Sibbald, Barbara TI - One country, 13 immunization programs DP - 2003 Mar 04 TA - Canadian Medical Association Journal PG - 598--598-a VI - 168 IP - 5 4099 - http://www.cmaj.ca/content/168/5/598.2.short 4100 - http://www.cmaj.ca/content/168/5/598.2.full SO - CMAJ2003 Mar 04; 168