[1] Tampere Univ Hosp, Dept Clin Physiol, FI-33521 Tampere, Finland
[2] Tampere Univ Hosp, Dept Pediat, FI-33521 Tampere, Finland
[3] Tampere Univ Hosp, Dept Clin Chem, FI-33521 Tampere, Finland
[4] Tampere Univ Hosp, Tampere, Finland
[5] Univ Turku, Dept Med, Turku, Finland
[6] Univ Turku, Dept Clin Physiol, Turku, Finland
[7] Univ Turku, Res Ctr Appl & Prevent Cardiovasc Med, Turku, Finland
[8] Turku Univ Hosp, FIN-20520 Turku, Finland
[9] Univ Helsinki, Div Nutr, Helsinki, Finland