1. Molecular/Cancer Biology LaboratoryHaartman InstituteDepartment of BiomedicineUniversity of Helsinki Helsinki Finland
2. NEB Bone and Joint InstituteBeth Israel Deaconess Medical CenterHarvard Institutes of Medicine Boston Massachusetts 02115 USA
3. Biocenter OuluDepartment of BiochemistryUniversity of Oulu Linnanmaa 90570 Oulu Finland