Levtchenko Elena, de Graaf-Hess Adriana, Wilmer Martijn, van den Heuvel Lambertus, Monnens Leo, Blom Henk
Department of Paediatric Nephrology, University Medical Centre St Radboud, Nijmegen, The Netherlands.
Clin Chem. 2004 Sep;50(9):1686-8. doi: 10.1373/clinchem.2004.031872.