PT - JOURNAL ARTICLE ED - , TI - Why does my child need more shots? DP - 2007 Oct 01 TA - Cleveland Clinic Journal of Medicine PG - 728--728 VI - 74 IP - 10 4099 - http://www.ccjm.org/content/74/10/728.short 4100 - http://www.ccjm.org/content/74/10/728.full SO - Cleve Clin J Med2007 Oct 01; 74