Phase II of the International Study of Asthma and Allergies in Childhood (ISAAC II): rationale and methods
- S.K. Weiland
- , B. Björkstén
- , B. Brunekreef
- , W.O.C. Cookson
- , E. von Mutius
- , D.P. Strachan
- , the International Study of Asthma and Allergies in Childhood Phase II Study Group
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