1. Department of Internal Medicine, Joint Municipal Authority for North Karelia Social and Health Services (Siun Sote), Joensuu, Finland.
2. Institute of Public Health and Clinical Nutrition, University of Eastern Finland, Kuopio, Finland.
3. School of Pharmacy, University of Eastern Finland, Kuopio, Finland.
4. Department of Public Health and Welfare, National Institute for Health and Welfare (THL), Helsinki, Finland.