1. Chemical Research Division, EGIS Pharmaceuticals Plc., P.O. Box 100, Budapest, H-1475 Hungary
2. Preclinical Research Division, EGIS Pharmaceuticals Plc., P.O. Box 100, Budapest, H-1475 Hungary
3. Les Laboratoires Servier, 22 rue Garnier, 92578 Neuilly-sur-Seine, France