1. Department of Pharmaceutics,
School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China
2. Municipal
Key Laboratory of Biopharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China
3. Key Laboratory of Structure-Based Drug Design and Discovery, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China
4. Division of Molecular Pharmaceutics and Center of Nanotechnology
in Drug Delivery, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States