Funding for this research was provided by:
Department of Science and Technology of Sichuan Province (2016FZ0099, 2017SZ0123)
Text and Data Mining valid from 2019-11-29
Received: 28 January 2019
Accepted: 21 November 2019
First Online: 29 November 2019
Ethics approval and consent to participate
: This study conformed strictly to the ethical guidelines of the Declaration of Helsinki and was approved by the West China Hospital of Sichuan University Biomedical Research Ethics Committee. All subjects provided written informed consent in accordance to the West China Hospital of Sichuan University Biomedical Research Ethics Committee protocols.
: Not applicable.
: The authors declare that they have no competing interest.