1. Key Laboratory of Radiopharmacokinetics for Innovative Drugs Chinese Academy of Medical Sciences, and Institute of Radiation Medicine Chinese Academy of Medical Sciences & Peking Union Medical College Tianjin 300192 P. R. China
2. State Key Laboratory of Medicinal Chemical Biology and College of Life Sciences Nankai University Tianjin 300071 P. R. China
3. Radiation Oncology Department Tianjin Medical University General Hospital Tianjin 300052 P. R. China