Yang, Yun
Zou, Chang
Fang, Yue
Funding for this research was provided by:
AO Foundation (AOTAP17-17)
Article History
Received: 28 June 2019
Accepted: 15 August 2019
First Online: 12 September 2019
Ethics approval and consent to participate
: Before the study began, we had carefully consulted the Ethics Committee and Institutional Review Board of West China Hospital. They suggested that this study did not involve special interventions for patients and we should conduct this study in compliance with the Helsinki Declaration and Inform patients fully of the purpose of the study. So, all data was fully anonymized at-source with researchers. Given the anonymous nature of the data, the ethics committee waived any requirement for patient informed consent.
: Not applicable.
: The authors declare that they have no competing interests.