Text and Data Mining valid from 2019-09-13
Received: 12 June 2019
Accepted: 6 September 2019
First Online: 13 September 2019
Ethics approval and consent to participate
: Approval to conduct this study was granted by the Institutional Review Board of Shanghai Jiao Tong University Affiliated Sixth People’s Hospital. All subjects provided written informed consent.
: As the study does not contain any information from any individual (including individual details, images or videos), this section is not applicable to our study.
: The authors declare no conflicts of interest.