1. Department of PediatricsUniversity of WashingtonSeattle Washington
2. Department of Genome SciencesUniversity of WashingtonSeattle Washington
3. Division of Genetic MedicineSeattle Children's HospitalSeattle Washington
4. Department of Molecular and Human GeneticsBaylor College of MedicineHoustonTexas
5. Texas Children's HospitalHouston Texas
6. Department of PediatricsUniversity of UtahSalt Lake CityUtah