1. Institute of Public Health and Clinical Nutrition University of Eastern Finland Kuopio 70211 Finland
2. Department of Medicine, Endocrinology and Clinical Nutrition Kuopio University Hospital Kuopio KYS 70029 Finland
3. Department of Public Health and Welfare Finnish Institute for Health and Welfare Helsinki 00271 Finland
4. Institute of Biomedicine, School of Medicine University of Eastern Finland Kuopio 70211 Finland
5. Department of Clinical Physiology and Nuclear Medicine Kuopio University Hospital Kuopio KYS 70029 Finland
6. Foundation for Research in Health Exercise and Nutrition Kuopio Research Institute of Exercise Medicine Kuopio 70100 Finland