Affiliation: | Department of Genetics and Biometry, The Galton Laboratory, University College London, Wolfson House, 4 Stephenson Way, London NW1 2HE;MRC Human Biochemical Genetics Unit, The Galton Laboratory, University College London, Wolfson House, 4 Stephenson Way, London NW1 2HE;Mothercare Clinical Genetics Unit, Institute of Child Health, 30 Guilford Street, London WC1N 1EH;Cancer Research Campaign Department of Cancer Genetics, Paterson Institute for Cancer Research, Christie Hospital and Holt Radium Institute, Manchester M20 9BX |