[1] Karolinska Inst, Karolinska Univ Hosp, Astrid Lindgrens Childrens Hosp, Dept Womens & Childrens Hlth, Stockholm, Sweden
[2] Uppsala Univ, Karolinska Inst, Dept Neurobiol Care Sci, Uppsala, Sweden
[3] Uppsala Univ, Acad Primary Hlth Care Ctr, Uppsala, Sweden
[4] Uppsala Univ, Dept Womens & Childrens Hlth, Uppsala, Sweden
[5] Lund Univ, Ctr Primary Hlth Care Res, Dept Clin Sci, Malmo, Region Skane, Sweden
[6] Univ Clin Primary Care Skane, Malmo, Region Skane, Sweden
[7] Univ Gothenburg, Sahlgrenska Univ Hosp, COPD Ctr, Dept Resp Med & Allergol, Gothenburg, Sweden
[8] Univ Gothenburg, Inst Med, Sahlgrenska Acad, Dept Internal Med & Clin Nutr, Gothenburg, Sweden
[9] Karolinska Inst, Inst Environm Med, Div Lung & Airway Res, Stockholm, Sweden
[10] Karolinska Univ Hosp, Severe Asthma Ctr, Dept Resp Med & Allergy, Stockholm, Sweden
[11] Umea Univ, Dept Publ Hlth & Clin Med, OLIN unit, Umea, Sweden