1. Chongqing Key Laboratory of Medicinal Resources in the Three Gorges Reservoir Region; School of Biological and Chemical Engineering; Chongqing University of Education; Chongqing 400067 P. R. China
2. Research Center of Brain Intellectual Promotion and Development for Children Aged 0-6 Years; Chongqing University of Education; Chongqing 400067 P. R. China
3. School of Medicine and Pharmacy; Ocean University of China; Qingdao 266100 P. R. China
4. College of Engineering and Applied Sciences; Nanjing University; Nanjing 210023 P. R. China