Tian, Yulong
Cao, Shougen
Kong, Ying
Shen, Shuai
Niu, Zhaojian
Zhang, Jian
Chen, Dong
Jiang, Haitao
Lv, Liang
Liu, Xiaodong
Li, Zequn
Zhong, Hao
Zhou, Yanbing
Article History
Received: 26 June 2020
Accepted: 16 December 2020
First Online: 11 January 2021
Compliance with ethical standards
:
: Yulong Tian, Ying Kong, Shuai Shen, Shougen Cao, Zhaojian Niu, Jian Zhang, Dong Chen, Haitao Jiang, Liang Lv, Xiaodong Liu, Zequn Li, Hao Zhong, and Yanbing Zhou have no conflicts of interest or financial ties to disclose.
: The study was approved by the Affiliated Hospital of Qingdao University ethics review committee (Approval Number QYFYWZLL-25979). All procedures have been performed in accordance with the ethical standards laid down in the 1964 Declaration of Helsinki and its later amendments.
: Informed consent or substitute for it was obtained from all patients for being included in the study.