1. Department of Molecular and Human Genetics
2. Department of Pediatric Surgery
3. Department of Clinical Genetics, Erasmus Medical Center, Rotterdam 3015 GJ, The Netherlands
4. Department of Pediatrics, The University of Iowa, Iowa City, IA 52242, USA
5. Institute for Genetic Medicine and Center for Craniofacial Molecular Biology, University of Southern California, Los Angeles, CA 90033, USA
6. Howard Hughes Medical Institute, Houston, TX 77030, USA
7. Department of Pediatrics
8. Department of Internal Medicine, Wayne State University, Detroit, MI 48201, USA
9. Department of Molecular Physiology and Biophysics, Baylor College of Medicine, Houston, TX 77030, USA