[1] UNIV TURKU,CENT HOSP,DEPT CLIN CHEM,FIN-20520 TURKU,FINLAND
[2] UNIV TURKU,CENT HOSP,DEPT PEDIAT,FIN-20520 TURKU,FINLAND
[3] SAHLGRENS UNIV HOSP,DEPT CLIN CHEM,S-41345 GOTHENBURG,SWEDEN
[4] UNIV AMSTERDAM,ACAD MED CTR,DEPT CLIN CHEM,NL-1105 AZ AMSTERDAM,NETHERLANDS
[5] UNIV AMSTERDAM,ACAD MED CTR,DEPT PEDIAT,NL-1105 AZ AMSTERDAM,NETHERLANDS
[6] UNIV TURKU,DEPT PHYSIOL,SPORTS MED RES UNIT,TURKU,FINLAND