1. Åstrand Laboratory of Work Physiology, The Swedish School of Sport and Health Sciences, Stockholm, Sweden
2. Department of Radiology, Sahlgrenska Academy, University of Gothenburg and Sahlgrenska University Hospital, Gothenburg, Sweden
3. Department of Cardiology, Sahlgrenska University Hospital, Gothenburg, Sweden
4. Department of Molecular and Clinical Medicine, Sahlgrenska Academy, University of Gothenburg and Sahlgrenska University Hospital, Gothenburg, Sweden
5. Institute of Neuroscience and Physiology, Department of Food and Nutrition, and Sport Science, University of Gothenburg, Sahlgrenska University Hospital/Östra, Gothenburg, Sweden