1. Department of Bioinformatics and Genomics, College of Computing and Informatics, UNC Charlotte, Charlotte, North Carolina, USA
2. National Institute for Nutrition and Health, Chinese Center for Disease Control and Prevention, Beijing, China
3. Carolina Population Center, UNC Chapel Hill, Chapel Hill, North Carolina, USA
4. Department of Biostatistics, Gillings School of Global Public Health, UNC Chapel Hill, Chapel Hill, North Carolina, USA
5. Department of Nutrition, Gillings School of Global Public Health, UNC Chapel Hill, Chapel Hill, North Carolina, USA