1 Department of Health Security, Finnish Institute for Health and Welfare, Kuopio, Finland. Electronic address: anne.karvonen@thl.fi.
2 Department of Health Security, Finnish Institute for Health and Welfare, Kuopio, Finland; Institute of Public Health and Clinical Nutrition, University of Eastern Finland, Kuopio, Finland.
3 Department of Health Security, Finnish Institute for Health and Welfare, Kuopio, Finland.
4 Department of Health Security, Finnish Institute for Health and Welfare, Kuopio, Finland; Department of Public Health, University of Helsinki, Helsinki, Finland.