9 West Midlands Regional Genetics Service, Birmingham Women's and Children's NHS Foundation Trust, Birmingham, UK.
10 Institute for Medical Genetics and Pathology, University Hospital Basel, Basel, BS, Switzerland.
11 Department of Clinical Genetics, Leiden University Medical Centre, 2333 ZA, Leiden, the Netherlands.
12 St Mark's Hospital, Watford Road, Harrow, HA1 3UJ, UK.
13 Institute of Cancer and Genomic Sciences, University of Birmingham Medical School, Vincent Drive, Edgbaston, Birmingham, B15 2JJ, UK. c.palles@bham.ac.uk.
14 Dept of Oncology, University of Oxford, Old Road Campus Research Building, Roosevelt Drive, Oxford, OX3 7DQ, UK. ian.tomlinson@oncology.ox.ac.uk.