1. School of Pharmacy, Qingdao University, Qingdao 266071, P. R. China
2. School of Health and Life Sciences, University of Health and Rehabilitation Sciences, Qingdao 266113, P. R. China
3. Guangdong Key Laboratory of Biomedical Measurements and Ultrasound School of Biomedical Engineering, Shenzhen University Medical School, Shenzhen, Shenzhen, Guangdong 518055, China