1. University of Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, ENSCBP, 33607 Pessac Cedex, France
2. ARNA Laboratory, University of Bordeaux, UMR CNRS 5320, INSERM U121, 33076 Bordeaux, France
3. Université de Poitiers, IC2MP UMR-CNRS 7285, 86073 Poitiers Cedex 9, France