1. Turku PET Centre; Turku Finland
2. Department of Clinical Physiology and Nuclear Medicine; University of Turku; Turku Finland
3. Division of Experimental Cardiology; Thoraxcenter; Erasmus MC; University Medical Center Rotterdam; Rotterdam The Netherlands
4. School of Kinesiology; University of British Columbia; Vancouver BC Canada
5. Exercise and Sport Sciences; Section of Human Physiology; University of Copenhagen; Copenhagen Denmark