Affiliation: | 1. Department of Pediatrics, Division of Medical Genetics, University of Utah, Salt Lake City, Utah;2. University of Milano, Milan, Italy;3. Department of Pediatrics, Division of Genetics and Metabolism, University of Minnesota, Minneapolis, Minnesota;4. Department of Pathology, University of Utah, Salt Lake City, Utah;5. Primary Children's Hospital, Salt Lake City, Utah;6. ARUP Laboratories, University of Utah, Salt Lake City, Utah |