[1] Allergy Ctr Vienna West, Hutteldorfertrasse 46, A-1150 Vienna, Austria
[2] Med Univ Vienna, Wilhelminen Hosp, Teaching Hosp, Dept Internal & Pulm Med, Montleartstr 37, A-1160 Vienna, Austria
[3] Graz Univ, Clin Dept Pediat Pulmonol & Allergol, Univ Clin Pediat & Adolescent Med, Auenbruggerpl 34-2, A-8036 Graz, Austria
[4] Dept Pediat & Adolescent Med Innsbruck, Pediat Pulmonol Allergol, Anichstr 35, A-6020 Innsbruck, Austria
[5] Hietzing Hosp, Karl Landsteiner Inst Expt & Clin Pulmonol, Dept Resp & Lung Dis, Wolkersbergenstr 1, A-1010 Vienna, Austria
[6] Kardinal Schwarzenberg Hosp, Dept Pediat & Adolescent Med, Kardinal Schwarzenbergstr 2-6, A-5620 Schwarzach, Austria
[7] Univ Clin Pediat & Adolescent Med, Clin Dept Pediat Pulmonol Allergol & Endocrinol, Wahringer Gurtel 18-20, A-1090 Vienna, Austria
[8] Floridsdorf Allergy Ctr, Franz Jonas Pl 8-6, A-1210 Vienna, Austria
[9] Wilhelminen Hosp, Dept Pediat & Adolescent Med, Montleartstr 37, A-1160 Vienna, Austria
[10] Paracelsus PrivateMed Univ, Univ Clin Pulmonol, Univ Hosp, Hosp Salzburg, Mullner Hauptstr 48, A-5020 Salzburg, Austria