Yang, Xue
Chen, Mingsheng
Du, Jinglin
Wang, Zhonghua
Funding for this research was provided by:
Jiangsu Provincial Department of Education
Article History
Received: 19 June 2018
Accepted: 12 November 2018
First Online: 22 November 2018
Ethics approval and consent to participate
: This study was approved by the Academic Research Ethics Committee of Nanjing Medical University. All procedures were in accordance with the ethical standards of the Helsinki Declaration. Participants provided informed consent prior to data collection.
: Not applicable.
: The authors declare that they have no competing interests.
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