Liu, Yong
Chen, Yaqing
Tan, Lili
Zhao, Hongmei
Xiao, Nuan
Funding for this research was provided by:
Health Planning Commission of Hebei Provincial Medical Research (20180724)
Baoding City Science and Technology and Intellectual Property Bureau (17ZF131)
Health Planning Commission and Finance Department of Hebei Provincial: Geriatric Disease Prevention and Control Project (2017068879-204)
Article History
Received: 5 October 2018
Accepted: 1 February 2019
First Online: 8 February 2019
Compliance with ethical standards
:
: All authors disclose that they do not have any financial and personal relationships with other people or organizations that could inappropriately influence (bias) their work. Potential conflicts of interest include employment, consultancies, stock ownership, honoraria, paid expert testimony, patent applications/registrations and grants or other funding. All the authors state that they have no conflicts of interest.
: The study was approved by the Ethics Committee of Affiliated Hospital of Hebei University.
: Written informed consent had been signed by all patients.