- Correspondence to: Dr M E Suzanne Lewis Department of Medical Genetics, The University of British Columbia, The Child and Family Research Institute, 4500 Oak Street, Vancouver, B.C., Canada V6H 3N1;
- Received June 21, 2006
- Accepted August 3, 2006
- Revised July 20, 2006
- First published September 8, 2006.
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