Lili Xu1, Huijun Gao2, Kenneth I Kaitin3, Liming Shao1. 1. Fudan Center for Study of Pharmaceuticals and Healthcare Strategy, Pudong, Shanghai, China. 2. Shanghai Association of Food and Drug Safety, Xuhui, Shanghai, China. 3. Tufts Center for the Study of Drug Development, Tufts University School of Medicine, Boston, MA, USA.