Wang, X.
Xu, Z.
Xiao, Y.
Chen, G.
Article History
Received: 1 December 2019
Revised: 1 April 2020
Accepted: 2 April 2020
First Online: 6 May 2020
Compliance with ethical guidelines
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: X. Wang, Z. Xu, Y. Xiao and G. Chen declare that they have no competing interests.
: For this article no studies with human participants or animals were performed by any of the authors. All studies performed were in accordance with the ethical standards indicated in each case. Additional written informed consent was obtained from the legal representatives of the patient for whom identifying information is included in this article.