1. Biostatistics and Bioinformatics Branch, Division of Intramural Population Health Research; Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health; Rockville Maryland United States of America
2. Epidemiology Branch, Division of Intramural Population Health Research; Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health; Rockville Maryland United States of America
3. Inherited Disease Research Branch; National Human Genome Research Institute, National Institutes of Health; Bethesda Maryland United States of America
4. Human Genetics Center; University of Texas - Houston; Houston Texas United States of America