1. Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Graduate School, Nanning Normal University, Nanning 530001, People's Republic of China
2. Department of Pharmaceutics, School of Pharmacy, Qingdao University, Qingdao 266021, People's Republic of China
3. Institute for Translational Medicine, College of Medicine, Qingdao University, Qingdao 266021, People's Republic of China