Inclusion Criteria:  Patients in the age group of 6-14 years, free of exclusion criteria and complaining of chest wheezes were included in the study.  Exclusion Criteria:  Presence of acute asthmatic attack, current or recurrent chest infection, allergic dermatological disorders, chronic rhino-sinusitis, deviated nasal septum, other nasal or palatal congenital anomalies, history of chronic exposure to allergens, or living in areas characterized by air pollution, being passive smokers since birth, presence of autoimmune disorders, serum 25-HVD >50 nmol/L and presence of clinically evident HVD.