Zhang, X.
Yang, K.
Zhang, H.
Dong, W.
Peng, W.
Zhao, Y.
Article History
Received: 27 February 2019
Revised: 22 April 2019
Accepted: 6 May 2019
First Online: 14 June 2019
Compliance with ethical guidelines
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: X. Zhang, K. Yang, H. Zhang, W. Dong, W. Peng, and Y. Zhao declare that they have no competing interests.
: For this article no studies with human participants were performed by any of the authors. All studies performed were in accordance with the ethical standards indicated in each case. All applicable international, national, and/or institutional guidelines for the care and use of animals were followed.