1. College of Pharmacy; Natural Product Research Institute, Seoul National University; San 56-1 Sillim-dong, Gwanak-gu 151-742 Seoul Republic of Korea
2. Department of Radiology; Seoul National University College of Medicine; 110-744 Seoul Republic of Korea
3. Department of Radiation Applied Life Science; Seoul National University College of Medicine; 110-744 Seoul Republic of Korea
4. Department of Internal Medicine; Seoul National University Hospital; 110-744 Seoul Republic of Korea
5. Department of Neurosurgery; Seoul National University Hospital; 110-744 Seoul Republic of Korea
6. Center for Nanoparticle Research; Institute for Basic Science (IBS); Seoul 151-742 Republic of Korea
7. School of Chemical and Biological Engineering; Seoul National University; Seoul 151-742 Republic of Korea