1. Chongqing Key Laboratory of Nonlinear Circuits and Intelligent Information Processing, College of Electronic and Information Engineering, Southwest University, Chongqing, China
2. Endocrinology Department, The Ninth People's Hospital, Chongqing, China
3. School of Natural Medicine, University of the Western Cape, Bellville, South Africa
4. Department of Electronic Engineering, Chinese University of Hong Kong, Shatin, China
5. Department of Electrical and Computer Engineering, University of Alabama in Huntsville, Huntsville, AL, USA