title: Sample design for a survey of immunization levels of children in licensed day-care facilities in North Carolina.
mesh_terms: D002656:Child Day Care Centers; D002675:Child, Preschool; D006801:Humans; D007114:Immunization; D007223:Infant; D009657:North Carolina; D011153:Population; D011314:Preventive Health Services / Q000706:statistics & numerical data*; D012494:Sampling Studies