1. Department of Pediatrics, University of Texas Medical School, Houston, Texas;
2. Department of Pediatrics, Baylor College of Medicine, Houston, Texas;
3. Texas Children's Health Plan, Houston, Texas;
4. Crime Laboratory, Houston Police Department, Houston, Texas;
5. Institute for Serology and Forensic Genetics, University of Denver, Denver, Colorado; and
6. University of Texas Health Science Center, San Antonio, Texas