University of Maryland - Institute for Genome Sciences, University of Maryland - Institute for Genome Sciences, University of Maryland - Institute for Genome Sciences, University of Pittsburgh - Department of Human Genetics, University of Pittsburgh - Department of Human Genetics, University of Washington - Department of Biostatistics, University of Auckland - Department of Anthropology, University of Cincinnati - Department of Environmental Health, Yale University - Department of Epidemiology (Chronic Disease), Independent, Government of Samoa - Ministry of Health, Independent, Independent, Brown University and University of Maryland - Institute for Genome Sciences