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; Bethesda 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; Bethesda Maryland United States of America
3. Department of Biostatistics; School of Public Health, The University of Michigan; Ann Arbor Michigan United States of America
4. Computational and Statistical Genomics Branch; National Human Genome Research Institute, National Institutes of Health; Bethesda Maryland United States of America
5. Human Genetics Center; University of Texas - Houston; Houston Texas United States of America
6. Office of Biostatistics Research; National Heart, Lung and Blood Institute, National Institutes of Health; Bethesda Maryland United States of America