1. Department of Physiology and Pharmacology Karolinska Institutet Stockholm Sweden
2. Department of Medicine, Cardiology Research Unit Karolinska Institutet Stockholm Sweden
3. Department of Kinesiology and Physical Education McGill University Montreal Canada
4. Heart, Vascular and Neurology Theme, Cardiology Unit Karolinska University Hospital Stockholm Sweden
5. School of Health Sciences, Sapporo Medical University Sapporo Japan