Zhang, Yu
Zeng, Na
Zhu, Yi Chen
Huang, Yang Xin Rui
Guo, Qiang
Tian, Ye http://orcid.org/0000-0002-8286-4456
Article History
Received: 28 November 2017
Accepted: 16 March 2018
First Online: 1 June 2018
Ethics approval and consent to participate
: This article does not contain any studies with human participants or animals performed by any of the authors; and it receives ethics approval from the Capital Medical University affiliated to Beijing Friendship Hospital Ethics Committee; no informed consent was obtained because we applied for an exception to informed consent from our ethics committee.
: Not applicable.
: The authors declare that they have no competing interests.
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