1. Laboratory for Chemical Design of Bionanomaterials Faculty of Chemistry M. V. Lomonosov Moscow State University 1 Leninskie Gory Moscow 117234 Russia
2. Department of Pharmaceutical Sciences and Center for Drug Delivery and Nanomedicine College of Pharmacy University of Nebraska Medical Center 985830 Nebraska Medical Center Omaha NE 68198 USA
3. Division of Pharmacoengineering and Molecular Pharmaceutics Center for Nanotechnology in Drug Delivery Eshelman School of Pharmacy University of North Carolina 125 Mason Farm Road Chapel Hill NC 27599 USA