1. From the Biomarker Laboratory, Department of Health and Functional Capacity, National Public Health Institute, Helsinki, Finland (IE, RK, and GA); the Population Research Laboratory, Department of Health and Functional Capacity, National Public Health Institute, Turku, Finland (AJ, JM, PP); the Finnish Red Cross Blood Service, Helsinki, Finland (PMu); and MTT Agrifood Research Finland, Jokioinen,