Li, Zhihui
Zhu, Peng
Huang, Hui
Pan, Ying
Han, Peng
Cui, Huanhuan
Kang, Zhijuan
Xun, Mai
Zhang, Yi
Liu, Saijun
Wang, Jian
Wu, Jing
Article History
Received: 22 November 2018
Accepted: 16 February 2019
First Online: 17 June 2019
Ethics
: <b>Compliance and ethics</b> The author(s) declare that they have no conflict of interest. The study followed the tenets of the Declaration of Helsinki and was approved by the institutional review board of BGI and Children s Hospital of Hunan Province, China. Informed consents were obtained from all the family members.