Funding for this research was provided by:
Lanzhou Talent programs for Innovation and Entrepreneurship (2015-RC-73)
Text and Data Mining valid from 2019-01-14
Received: 13 November 2018
Accepted: 2 January 2019
First Online: 14 January 2019
Ethics approval and consent to participate
: This study was conducted in accordance with the declaration of Helsinki.This study was conducted with approval from the Ethics Committee of The First People’s Hospital of Lanzhou.Written informed consent was obtained from all participants.
: Consent for publication was obtained from every individual whose data are included in this manuscript.
: The authors declare that they have no competing interest.
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