Funding for this research was provided by:
Department of Education of Zhejiang Province (Y201737812)
Article History
Received: 27 May 2019
Accepted: 1 November 2019
First Online: 12 November 2019
Ethics approval and consent to participate
: Our study was approved by the Ethics Committee of First Affiliated Hospital of Zhejiang University School of Medicine. Written informed consent was obtained from all subjects in our study. All the raw data are available from the corresponding author on reasonable request.
: Not applicable.
: The authors declare that they have no competing interests.