1. Emeritus Professor, University of Pittsburgh, Department of Pediatrics, School of Medicine, Department of Epidemiology, Graduate School of Public Health, Post Office Box 38472, Pittsburgh, Pennsylvania.
2. University of Pittsburgh School of Medicine, Department of Pediatrics, Division of Medical Genetics, Children's Hospital of Pittsburgh of UPMC, 4401 Penn Avenue at 45th Street, Pittsburgh, Pennsylvania.
3. Adjunct Faculty, Department of Chemistry, Seattle University, 21107 Westside Hwy SW, Vashon, Washington.
4. University of Pittsburgh School of Medicine, Department of Obstetrics, Gynecology and Reproductive Sciences, Magee Women's Hospital, Pittsburgh, Pennsylvania.
5. Adjunct Professor, Department of Pediatrics, Medical University of South Carolina Charleston, South Carolina.