Gao, Ying
Liu, Zhe
Liu, Yiting
Article History
Received: 22 March 2021
Accepted: 3 September 2021
First Online: 17 September 2021
Declarations
:
: The study was approved by the Ethics Committee of Affiliated Hospital of Yan’an University. Signed written informed consents were obtained from the patients and/or guardians.
: Not applicable.
: The authors declare that they have no competing interests.