1. Center for Computational Systems Medicine, McWilliams School of Biomedical Informatics, The University of Texas Health Science Center at Houston , Houston , TX 77030 , USA
2. Bioinformatics and Biomedical Big Data Mining Laboratory, Department of Medical Informatics, School of Big Health, Guizhou Medical University , Guiyang 550025 , China
3. West China Biomedical Big Data Centre, West China Hospital, Sichuan University , Chengdu , Sichuan 610041 , China
4. Department of Bioengineering, Rice University , Houston, TX 77005 , USA
5. Department of Health Outcomes and Biomedical Informatics, College of Medicine, University of Florida , Gainesville, FL 32610, USA