Yan, Li
Jiang, Bin
Niu, Yuyu
Wang, Hongxuan
Li, Enqin
Yan, Yaping
Sun, Huiyan
Duan, Yanchao
Chang, Shaohui
Chen, Guokai
Ji, Weizhi
Xu, Ren-He
Si, Wei
Article History
Received: 30 May 2018
Revised: 27 June 2018
Accepted: 5 July 2018
First Online: 20 August 2018
Change Date: 10 July 2019
Change Type: Correction
Change Details: Due to a technical error, content intended for publication in Volume 4 (2018) published in Volume 5 (2019). The content has been moved into the correct volume, and the citation information was updated accordingly.
Conflict of interest
: R.-H.X. is a founder of ImStem Biotechnology, Inc., a stem cell company. He declares competing financial interests. The remaining authors declare that they have no conflict of interest.