1. MRC Human Genetics Unit, Institute of Genetics & Molecular Medicine, University of Edinburgh, Western General Hospital, Edinburgh, EH4 2XU, UK
2. Edinburgh Urological Cancer Group, University of Edinburgh, Western General Hospital, Edinburgh, EH4 2XU, UK
3. School of Medicine, Medical & Biological Sciences Building, University of St Andrews, St Andrews, KY16 9TF, UK
4. MRC Human Genetics Unit, Institute of Genetics & Molecular Medicine, University of Edinburgh, Western General Hospital, Edinburgh, EH4 2XU, UK.