1. Institute of Metabolic Science, Addenbrooke’s Hospital, University of Cambridge Metabolic Research Laboratories, Cambridge, U.K.
2. Medical Research Council Human Genetics Unit, Institute of Genetics and Molecular Medicine, Western General Hospital, Edinburgh, U.K.
3. Metabolic Research Unit, St. James Hospital, Trinity College, Dublin, Ireland
4. Integrative Physiology, Department of Physiology and Pharmacology, Karolinska Institute, Stockholm, Sweden
5. Human DNA Damage Response Disorders Group, University of Sussex, Brighton, U.K.
6. Division of Genetics, Department of Pediatrics, Alfred I. DuPont Hospital for Children, Wilmington, Delaware