1. Department of Veterinary Biosciences; University of Helsinki; P.O. Box 66, 00014 Helsinki Finland
2. Research Programs Unit; Molecular Neurology; University of Helsinki; Haartmaninkatu 8 00290 Helsinki Finland
3. The Folkhälsan Institute of Genetics; Haartmaninkatu 8 00290 Helsinki Finland
4. Department of Biosciences; University of Helsinki; P.O. Box 56 00014 Helsinki Finland
5. Genoscoper Laboratories Oy; Biomedicum Helsinki 2U; Tukholmankatu 8 00290 Helsinki Finland