1. Department of Pharmacology and Toxicology, University Hospital, Limoges, FR.
2. Laboratory of Pharmacology, Faculty of Medicine, University Hospital, Limoges, FR.
3. Laboratoire de Pharmacologie et Toxicologie C.H.R.U. Dupuytren 2 avenue Martin-Luther-King 87042 Limoges Cedex FR.
4. Laboratory of Toxicology, Faculty of Pharmacy, University Hospital, Limoges, FR.