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Asthma severity and susceptibility to air pollution
TJ Hiltermann, J Stolk, SC van der Zee, B Brunekreef, CR de Bruijne, PH Fischer, CB Ameling, PJ Sterk, PS Hiemstra, L van Bree
European Respiratory Journal 11 (3) 686-693; DOI: 10.1183/09031936.98.11030686 Published 1 March 1998
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