title: An investigation of socio-psychological factors affecting infant immunization.
mesh_terms: D001294:Attitude to Health; D002675:Child, Preschool; D004522:Educational Status; D005191:Family Characteristics; D006801:Humans; D007114:Immunization; D007182:Income; D007223:Infant; D008923:Missouri; D010290:Parents; D012111:Residence Characteristics; D012959:Socioeconomic Factors