1. Center
for Theragnosis, Biomedical Research Institute, Korea Institute of Science and Technology (KIST), Seoul 136-791, Republic of Korea
2. Next-generation
Pharmaceutical Research Center, Korea Institute of Toxicology, Daejeon 305-343, Republic of Korea
3. Advanced
Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeonbuk 580-185, Republic of Korea
4. Department
of Nuclear Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 135-710, Republic of Korea
5. Molecular
Imaging Research Center, Korea Institute of Radiological and Medical Sciences, Seoul 139-706, Republic of Korea
6. Departments
of Pharmaceutics and Biomedical Engineering, Purdue University, West Lafayette, Indiana 47907, United States