- Correspondence to Dr Hannah M Mitchison, Molecular Medicine Unit, Birth Defects Research Centre, University College London (UCL) Institute of Child Health, 30 Guilford Street, London WC1N 1EH, UK; and Heleen H Arts, Department of Human Genetics (855), Radboud University Nijmegen Medical Centre, Geert Grooteplein Zuid 10, Nijmegen 6525 GA, The Netherlands;
- Received September 7, 2012
- Accepted January 21, 2013
- First published March 1, 2013.
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