- Correspondence to: Dr Jean-Charles Lambert unité INSERM 508, Institut Pasteur de Lille, BP 245,1 rue du professeur Calmette, 59019 Lille cédex, France;
- Received July 1, 2004
- Accepted October 15, 2004
- Revised October 14, 2004
- First published June 16, 2005.
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