Wang, Yuhong
Chen, Yuanjia
Li, Xiaoxing
Hu, Wanming
Zhang, Yu
Chen, Luohai
Chen, Minhu
Chen, Jie
Article History
Received: 26 September 2017
Accepted: 26 April 2018
First Online: 26 June 2018
Ethics approval and consent to participate
: The ethics approvals were provided by the institutional review board of The First Affiliated Hospital, Sun Yat-Sen University. All patients enrolled in this study provided written informed consent for the research study protocol. All methods were carried out in accordance with 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: All respondents gave consent to publication of data.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.