Funding for this research was provided by:
Fund of Education Department of Heilongjiang Province (2017-KYYWF-0739)
Fund of Qiqihar science and technology bureau (SFGG-201933)
Article History
Received: 8 September 2020
Accepted: 26 January 2022
First Online: 7 February 2022
Declarations
:
: This study was approved by the Ethics Committee of the Second Affiliated Hospital of Qiqihar Medical University. The patient data access was granted by National Health Commission of People’s Republic of China. Signed informed consent was obtained from all patients or their families.
: Not applicable.
: The authors declare that they have no competing interests.