Zhou, Aihua
Li, Ying
Wang, Ping
Yu, Ping
Lang, Liying
Article History
Received: 1 March 2021
Accepted: 4 April 2021
First Online: 12 April 2021
Declarations
:
: The study protocol was approved and authorized by the Ethics Committee of Affiliated Hospital of Weifang Medical University. The procedures of the patients involved in the study followed the guidelines of the Declaration of Helsinki.
: The patients signed and provided informed consent.
: The patients signed and provided informed consent.
: The authors declare no competing interests.