https://hal-pasteur.archives-ouvertes.fr/pasteur-00538541 Contributor : Sandra LegoutConnect in order to contact the contributor Submitted on : Monday, November 22, 2010 - 5:08:15 PM Last modification on : Friday, April 5, 2019 - 7:54:02 PM Long-term archiving on: : Wednesday, February 23, 2011 - 3:30:32 AM