Funding for this research was provided by:
Department of Science and Technology of Sichuan Province (2018JY0601)
Text and Data Mining valid from 2019-05-28
Received: 27 December 2018
Accepted: 22 April 2019
First Online: 28 May 2019
Ethics approval and consent to participate
: The study was approved by the Education and Research Committee and the Ethics Committee of Sichuan University (approval number SCU20100196494). Before sample collection, written informed consent was obtained from all the patients or their guardians, and patient/study subject privacy was carefully protected.
: Not applicable.
: The authors declare that they have no competing interests.
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