(Q40408559)
Statements
1 reference
Operational definitions of asthma in studies on its aetiology (English)
1 reference
J Pekkanen
1 reference
J Sunyer
1 reference
J M Anto
1 reference
P Burney
1 reference
European Community Respiratory Health Study
1 reference
1 July 2005
1 reference
1 reference
Identifiers
1 reference