[1] Umea Univ, Dept Publ Hlth & Clin Med, OLIN Unit, Umea, Sweden
[2] Sahlgrens Univ Hosp, COPD Ctr, Dept Resp Med & Allergol, Gothenburg, Sweden
[3] Univ Gothenburg, Inst Med, Sahlgrenska Acad, Dept Internal Med & Clin Nutr, Gothenburg, Sweden
[4] Karolinska Inst, Dept Womens & Childrens Hlth, Stockholm, Sweden
[5] Karolinska Univ Hosp, Astrid Lindgrens Childrens Hosp, Stockholm, Sweden
[6] Karolinska Inst, Inst Environm Med, Div Lung & Airway Res, Stockholm, Sweden
[7] Karolinska Univ Hosp, Karolinska Severe Asthma Ctr, Dept Resp Med & Allergy, Stockholm, Sweden
[8] Karolinska Univ Hosp, Ctr Mol Med, Lung Lab, Stockholm, Sweden