1. Kentucky Spinal Cord Injury Center, Department of Neurological Surgery, University of Louisville, Louisville, Kentucky, USA
2. Department of Pathology, University of Louisville, Louisville, Kentucky, USA
3. Ecole Nationale Supérieure de Chimie de Rennes, CNRS, UMR 6226, Rennes, France
4. European University of Brittany, Saint Malo, France
5. Laboratoire Goëmar, Saint Malo, France