1. Department of Tissue Engineering, Institute of Basic Medical Sciences and Tissue Engineering Research Center, Academy of Military Medical Sciences, Beijing, People's Republic of China.
2. Laboratory of Oncology, Affiliated Hospital of Academy of Military Medical Sciences, Dongdajie 8, Beijing 100071, People's Republic of China.
3. Integrated Department of South Building of Chinese PLA General Hospital, Beijing, People's Republic of China.
4. National Institute of Biological Sciences (NIBS), Beijing 102206, People's Republic of China.