Funding for this research was provided by:
The Health and Family Planning Commission of Chengdu (2015009)
Text and Data Mining valid from 2019-10-18
Received: 20 June 2019
Accepted: 11 September 2019
First Online: 18 October 2019
Ethics approval and consent to participate
: We obtained ethical approval for this study from the Medical and Health Research Ethics Committee in Second people’s Hospital of Chengdu, the Second Affiliated Hospital of Chengdu College, Nuclear Industry 416 Hospital of Chengdu, and Chongqing Medical University. The current study was carried out according to the Declaration of Helsinki. If the patient has consciousness disorder or aphasia, the decision cannot be made by themselves, the consent form can be signed by the patient’s legal proxies. Prior to enrollment, all patients or their legal proxies will be given detailed information about the aims, scope and possible consequences of the trial by a physician. No diagnostic or interventional procedures required for the clinical trial. Written informed consent was obtained from all study participants or their legal proxies.
: Not applicable.
: The authors declare that they have no competing interests.