- Correspondence to: Dr B Hoffmann Department for General Pediatrics, University Children’s Hospital, Heinrich Heine University Düsseldorf, Moorenstr. 5, D-40225 Düsseldorf, Germany;
- Received July 27, 2004
- Accepted October 5, 2004
- Revised October 1, 2004
- First published March 2, 2005.
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