Affiliation: | 1. Medical Genomics and Metabolic Genetics Branch, National Human Genome Research Institute, Bethesda, MD 20892, USA;2. Social and Behavioral Research Branch, National Human Genome Research Institute, Bethesda, MD 20892, USA;3. Research Triangle Institute, Washington, DC 20005, USA;4. Genetics Branch, National Cancer Institute, Bethesda, MD 20892, USA |