1Centre for Quantitative Medicine, Duke-NUS Medical School, Singapore, 169857, Singapore.
2Department of Biostatistics, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, 21205, United States.
3Department of Biostatistics and Bioinformatics, Duke School of Medicine, Durham, NC, 27710, United States.
4Children's Healthcare of Atlanta, Emory University School of Medicine, Atlanta, GA, 30329, United States.
5Department of Genome Sciences, University of Virginia, Charlottesville, VA, 22903, United States.
6Duke Clinical Research Institute, Duke University, Durham, NC, 27701, United States.
7Department of Biostatistics, Epidemiology and Informatics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, United States.