BGI-Shenzhen, Shenzhen, 518083, China.|BGI-Shenzhen, Shenzhen, 518083, China.|BGI-Shenzhen, Shenzhen, 518083, China.|Department of Biomedical Informatics, Vanderbilt University School of Medicine, Nashville, TN, 37232, USA.|Department of Biomedical Informatics, Vanderbilt University School of Medicine, Nashville, TN, 37232, USA.|BGI-Shenzhen, Shenzhen, 518083, China.|BGI-Shenzhen, Shenzhen, 518083, China.|BGI-Shenzhen, Shenzhen, 518083, China. siqiliu@genomics.cn.