- Correspondence to Berthold Hoppe, Institute of Laboratory Medicine, Clinical Chemistry and Pathobiochemistry, Charité – Universitätsmedizin Berlin, Campus Virchow-Klinikum, Augustenburger Platz 1, 13353 Berlin, Germany;
- Received September 7, 2011
- Accepted December 7, 2011
- First published January 20, 2012.
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