1. Department of Clinical Physiology and Nuclear Medicine; Kuopio University Hospital; Kuopio Finland
2. Department of Clinical Physiology and Nuclear Medicine; University of Eastern Finland; Kuopio Finland
3. Department of Applied Physics; University of Eastern Finland; Kuopio Finland
4. Department of Medicine; University of Turku; Turku Finland
5. Division of Medicine; Turku University Hospital; Turku Finland
6. Murdoch Children's Research Institute; Parkville Vic. Australia
7. Department of Clinical Physiology; Tampere University Hospital; Tampere Finland
8. Research Centre of Applied and Preventive Cardiovascular Medicine; University of Turku; Turku Finland
9. Department of Clinical Physiology and Nuclear Medicine; Turku University Hospital; Turku Finland