Ji, Li-li
Lu, Qian
Wang, Li-juan
Sun, Xiang-lian
Wang, Hui-dong
Han, Bing-xue
Ma, Yu-feng
Lu, Guo-hua http://orcid.org/0000-0002-3688-7673
Funding for this research was provided by:
Natural Science Foundation of Shandong Province (ZR2016GM05)
Health and Family Planning Commission of Shandong Province (2017WS852)
Science and Technology Development Plan of Weifang (2015WS009)
Department of Education of Shandong Province (J17RA137)
Article History
Received: 19 March 2019
Accepted: 7 December 2019
First Online: 20 December 2019
Compliance with ethical standards
:
: Li-li Ji, Qian Lu, Li-juan Wang, Xiang-lian Sun, Hui-dong Wang, Bing-xue Han, Yu-feng Ma and Guo-hua Lu declare that they have no conflict of interest.
: All procedures followed were in accordance with ethical standards of the responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1975, as revised in 2000. Informed consent was obtained from all patients for being included in the study.