Zhejiang Huahai Pharmaceutical Co., Ltd.; Huazhong University of Science and Technology; Li, Guangxing; Li, Jinjin; Zhu, Dajian; Jiang, Qiang; Cai, Lingli; Xie, Yong; Gan, Lixin Patent: US2013/281730 A1, 2013 ; Location in patent: Paragraph 0050 ;