- Correspondence to:
Dr Rafea Shaaban
INSERM U700, Epidémiologie des Maladies Respiratoires, Faculté Xavier Bichat, BP 416, 16 rue Henri Huchard, 75018 Paris, France;
- Received July 13, 2006
- Accepted October 22, 2006
- First published November 22, 2006.
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