1. Division of Intramural Population Health, Eunice Kennedy Shriver National Institute of Child Health and Human Development, Rockville, Maryland.
2. Division of Biomedical and Health Informatics, Department of Biomedical Informatics and Medical Education, University of Washington School of Medicine, Seattle, Washington.
3. Epidemiology Branch, Division of Intramural Population Health, Eunice Kennedy Shriver National Institute of Child Health and Human Development, Rockville, Maryland.
4. Division of Public Health, Department of Family and Preventive Medicine, University of Utah School of Medicine, Salt Lake City, Utah.
5. Glotech Corporation, Rockville, Maryland.
6. Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, School of Medicine, University of Utah, Salt Lake City, Utah.
7. Biostatistics and Bioinformatics Branch, Division of Intramural Population Health, Eunice Kennedy Shriver National Institute of Child Health and Human Development, Rockville, Maryland.