1. Department of Molecular Medicine, National Public Health Institute, 00290 Helsinki, Finland
2. Institute of Biomedicine, Department of Anatomy
3. Department of Pathology, Helsinki University Central Hospital, 00014 University of Helsinki, Helsinki, Finland
4. Department of Neurology, University Hospital, D-66421 Homburg/Saar, Germany
5. Department of Forensic Psychiatry, University of Kuopio, 70240 Kuopio, Finland
6. Department of Medicine/Invärtes medicin, 00029 Helsinki University Central Hospital and ORTON Orthopaedic Hospital of the Invalid Foundation, Helsinki, Finland
7. Department of Medical Genetics, 00014 University of Helsinki, Helsinki, Finland