Higher asthma occurrence in an urban than a suburban area: role of house dust mite skin allergy
MH Wieringa, JJ Weyler, FJ Van Bastelaer, VJ Nelen, MP Van Sprundel, PA Vermeire
European Respiratory Journal 1997 10: 1460-1466; DOI: 10.1183/09031936.97.10071460