Children's health needs in seasonal immigration.
D000293:Adolescent; D002140:California; D002648:Child; D002662:Child Health Services / Q000706:statistics & numerical data*; D002675:Child, Preschool; D004641:Emigration and Immigration; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D008800:Mexico / Q000208:ethnology; D012621:Seasons; D012959:Socioeconomic Factors