Funding for this research was provided by:
Wu Jieping Medical Foundation's special funding fund for clinical research (No.320.6750.17570)
Young Scientists Fund (81801892)
Sichuan University Postdoctoral Research Fund (No.2018SCU12036)
Article History
Received: 31 October 2018
Accepted: 21 November 2018
First Online: 17 December 2018
Ethics approval and consent to participate
: The clinical research ethics boards of the West China Hospital approved the study and waived the need for participants’ informed consent because of the study’s retrospective, anonymous, and non-interventional nature. All methods were performed in accordance with the relevant guidelines and regulations.
: Not applicable.
: The authors declare that they have no competing interests.
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