1. Institute of Pediatrics, The Kunming Children's Hospital, Kunming, Yunnan 650228, P.R. China
2. Institute of Pediatrics, Children's Hospital Affiliated to Kunming Medical University, Kunming, Yunnan 650228, P.R. China
3. Institute of Medicine, Dali University, Dali, Yunnan 671000, P.R. China
4. Yunnan Key Laboratory of Stem Cell and Regenerative Medicine, Biomedical Engineering Research Center, Kunming Medical University, Kunming, Yunnan 650500, P.R. China
5. Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming, Yunnan 650118, P.R. China