3Strachan D,Sibbald B,Weiland S,et al.Worldwide variations in prevalence of symptoms of allergic rhinoconjunctivitis in children[J].Pediatr Allergy Immunol,1997,8:161.
4Bousquet J,Van Cauwenberge P,Khaltaev N.Allergic rhinitis and its impact on asthma[J].Allergy Clin Immunol,2001,108:147-334.
5Asher MI,Weilland SK.The International study on Asthma and Allergy Asthma in Childhood(ISAAC),ISAAC steering Committee[J].Clin Exp Allergy,1998,5:52.
