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Authors
Tian, Li-qiang
Fu, Qing-xi https://orcid.org/0000-0003-3264-1470
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Funding
Funding for this research was provided by:
Natural Science Foundation of Shandong Province (ZR2016HL16)
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Article History
Received: 2 April 2020
Accepted: 28 June 2020
First Online: 18 September 2020
Ethics approval and consent to participate
: The study protocol was approved by the local institutional review boards of the Linyi People’s Hospital. Verbal consent for participating the study was obtained from each patient at the time of diagnosis. The purpose and design of the study was carefully explained to all individual participants accompanied by their close relatives before verbal consent was obtained according to the guidance provided by the ethical committee. Verbal consent was selected due to the limited writing ability of some participants. This procedure has been approved by the ethical committee.
: Not applicable.
: The authors declare that they have no competing interests.
