Yu, Hualong
Zhang, Chuanyu
Liu, Shihe
Jiang, Gang
Li, Shaoke
Zhang, Liang
Wang, Yongjie
Xu, Wenjian
Article History
Received: 2 January 2020
Accepted: 23 September 2020
First Online: 2 November 2020
Ethics approval and consent to participate
: This study was performed in accordance with the Declaration of Helsinki and was approved by the Ethics Committee at Affiliated Hospital of Medical College, Qingdao Universityy. Written informed consent was obtained.
: Written informed consent was obtained.
: The authors declare that they have no competing interests.