1. Laboratory Medicine,
2. Dade Behring Marburg GmbH, 35001 Marburg, Germany;
3. Nephrology, and
4. Gesellschaft für Biotechnologische Forschung, Department of Protein Glycosylation, 38124 Braunschweig, Germany
5. Urology, University Hospital Charité, Humboldt University Berlin, 10098 Berlin, Germany;