1. Laboratory of Cancer Genetics, Laboratory Medicine Center (LMC), University Hospital Linköping, 582 16 Linköping, Sweden.
2. Department of Biomedicine and Surgery, Faculty of Health Sciences, Linköping University, S-581 85 Linköping, Sweden.
3. Present address: CellAmp Laboratories, Westmansgatan 29, Wahlbecks Industrial Park, S-582 16 Linköping, Sweden.
4. Charles Salt Centre, Robert Jones & Agnes Hunt Orthopaedic & District Hospital NHS Trust, Gobowen, Shropshire SY10 7AG, UK.