1. Departments of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden
2. Department of Radiation Physics, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
3. Department of Medical Physics and Biomedical Engineering, Sahlgrenska University Hospital, Gothenburg, Sweden
4. Molecular medicine and surgery, Karolinska intitutet, Stockholm, Sweden
5. Department of Thoracic radiology, Karolinska University Hospital, Stockholm, Sweden