Acknowledgements
This work was funded in part by the European Commission under the FAIR CT 97–3159 project and contributed to the PhD Thesis of C. Choma. C. Choma received a PhD fellowship from the Conseil Régional Provence-Alpes-Côte d’Azur (France). Thank are due to BioMérieux, Marcy L’Etoile, France for technical support. Authors are grateful to Bernadette Besson, Agnès Braconnier, Laurent Massini, Roselyne Pasqualini, Elisabeth Bottreau and Jérémie Sacchetto for their participation in this study.