1. University of North Carolina Wilmington; Wilmington NC USA
2. INC Research LLC; Wilmington NC USA
3. Worldwide Epidemiology; GlaxoSmithKline; Uxbridge UK
4. Clinical Development; GlaxoSmithKline; Research Triangle Park NC USA
5. National Center on Birth Defects and Developmental Disabilities; Centers for Disease Control and Prevention; Atlanta GA USA
6. Oregon Health and Science University; Portland OR USA
7. North Pacific Neurological Research; Portland OR USA
8. RTI International; Research Triangle Park NC USA