1. Department of Respiratory Medicine, Seinäjoki Central Hospital, Seinäjoki, Finland
2. Faculty of Medicine and Life Sciences, University of Tampere, Tampere, Finland
3. Department of Laboratory Medicine and Medical Research Unit, Seinäjoki Central Hospital and University of Tampere, Seinäjoki, Finland
4. Medical Informatics and Statistics Research Group, University of Oulu, Oulu, Finland
5. Allergy Centre, Tampere University Hospital, Tampere, Finland