Xue, Xiulan
Liao, Wei
Xing, Yugang
Article History
Received: 22 July 2019
Accepted: 12 January 2020
First Online: 14 February 2020
Ethics approval and consent to participate
: The Institutional Review Board of First affiliated hospital of Xiamen university had approved this study. All procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation and with the Helsinki Declaration of 1975, as revised in 2008.
: Not applicable.
: The authors declare that they have no financial or non-financial interests with other people or organizations that could inappropriately influence this work.