1. INSERM U388, IFR31Institut Louis BugnardCHU Rangueil Toulouse 31403 Cedex 4 France
2. Department of PathologyCHU Rangueil Toulouse 31403 Cedex 4 France
3. Institut de Recherches Internationales Servier 6, place des Pleiades 92415 Courbevoie France
4. Laboratory of BiochemistryCHU Rangueil Toulouse 31403 Cedex 4 France