Ji, M.
Zhang, L. J. http://orcid.org/0000-0001-8013-4073
Article History
Received: 17 February 2020
Accepted: 28 May 2020
First Online: 23 June 2020
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: The study was approved by Ethical Committee of Affiliated Hospital of Weifang Medical University and conducted in accordance with the ethical standards.
: All the subjects signed the informed consent.