Yangqiu Li1, Yi-Long Wu2. 1. Institute of Hematology, Jinan University, Guangzhou, 510632, China; Key Laboratory for Regenerative Medicine of Ministry of Education, Jinan University, Guangzhou, 510632, China. 2. Guangdong Lung Cancer Institute, Guangdong General Hospital & Guangdong Academy of Medical Sciences, Guangzhou, 510080, China. Electronic address: syylwu@live.cn.