Auban Moët Hospital, 137 rue de l'hôpital, BP: 137, 51200 Epernay, France; UMR 6265 CNRS (National Centre for Scientific Research) - UMR 1324 INRA, University of Burgundy, 9E Boulevard Jeanne d'Arc, 21000 Dijon, France. Electronic address: clovis.foguem@ch-epernay.fr.