Hua, Xingyi
Yan, Shuang G.
Cui, Yiliang
Yin, Zongsheng
Schreiner, Anna J.
Schmidutz, Florian
Article History
Received: 30 May 2018
First Online: 8 December 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: The retrospective study was approved by the Ethics Committee of the local University and performed according to the Declaration of Helsinki.