1. School of Biomedical Informatics, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
2. College of Electronics and Information Engineering, Tongji University, Shanghai, China
3. McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
4. School of Dentistry, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA