1. Department of Medical Sciences, Uppsala University, Uppsala, Sweden
2. Department of Laboratory Medicine, Division of Clinical Physiology, Karolinska University Hospital, Stockholm, Sweden
3. Department of Oncology-Pathology, Karolinska Institute, Stockholm, Sweden
4. Department of Medical Radiation Physics & Nuclear Medicine, Karolinska University Hospital, Stockholm, Sweden
5. Department of Respiratory Medicine and Allergy, Karolinska University Hospital, Stockholm, Sweden