1. Department of Pharmacy, Center of Drug Research, University of Munich, D-81377 Munich, Germany
2. Biochemical Pharmacology, University of Konstanz, D-78457 Konstanz, Germany
3. Lichtwer Pharma AG, D-13435 Berlin, Germany
4. HRI Wellesbourne, Wellesbourne, Warwick, CV35 9EF, UK
5. Université François Rabelais, IRBI CNRS UMR 6035 37200 Tours, France
6. CIRAD-FLHOR, PS4/TA50, 34398 Montpellier cedex 5, France