- Correspondence to: Professor Dr Hartmut P.H. Neumann Medizinische Universitätsklinik, Abteilung Nephrologie, Hugstetterstr. 55, D 79106 Freiburg i.B, Germany;
- Accepted June 5, 2003
- Revised June 4, 2003
- First published September 5, 2003.
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