Allergy and heredity. Prospective study.
D000367:Age Factors; D002648:Child; D002675:Child, Preschool; D005260:Female; D030342:Genetic Diseases, Inborn / Q000276:immunology*; D006801:Humans; D006967:Hypersensitivity / Q000453:epidemiology / Q000235:genetics*; D007223:Infant; D008297:Male; D011446:Prospective Studies; D012882:Skin Tests; D014481:United States