Sun, Lixin
Li, Qiujie
Wang, Qiang
Ma, Fuguo
Han, Wei http://orcid.org/0000-0003-3508-0103
Wang, Mingshan
Funding for this research was provided by:
Scientific Research and Technological Development Program of Qingdao (KJZD-13-14-NSH)
Article History
Received: 17 April 2018
Accepted: 24 May 2019
First Online: 12 June 2019
Ethics approval and consent to participate
: The study was approved by the ethics committee of Qingdao Municipal Hospital (No. 20140806–1). Each patient provided a written informed consent.
: Not applicable.
: The authors declare that they have no competing interests.