1. Center for Environmental and Respiratory Health Research (CERH) University of Oulu Oulu Finland
2. Medical Research Center University of Oulu and Oulu University Hospital Oulu Finland
3. Centria University of Applied Sciences Kokkola Finland
4. Cardiovascular Research Group Division of Cardiology Oulu University HospitalUniversity of Oulu Oulu Finland
5. Research Unit of Internal Medicine Medical Research Center Oulu University of Oulu and Oulu University Hospital Oulu Finland
6. Department of Internal Medicine University of Texas Southwestern Medical Center and the Institute for Exercise and Environmental Medicine Texas Health Presbyterian Hospital Dallas TX USA
7. Aeromedical Centre Finnish Defence Forces Helsinki Finland