Funding for this research was provided by:
The National Natural Science Foundation of China (81800250)
Article History
Received: 12 August 2019
Accepted: 7 May 2020
First Online: 15 May 2020
Ethics approval and consent to participate
: Verbal informed consent was obtained from the subjects involved in the study. The protocol was conducted in accordance with the Declaration of Helsinki. The procedure with which consent to participate was obtained was approved by the Institutional Review Board of Northern Jiangsu People’s Hospital, Jiangsu Province, China. This study was approved by the Institutional Review Board of Northern Jiangsu People’s Hospital, Jiangsu Province, China.
: Not applicable.
: The authors declare that they have no competing interests.