Yang, Ying
Hao, Qiukui
Flaherty, Joseph H.
Cao, Li
Zhou, Jianghua
Su, Li
Shen, Yanjiao
Dong, Birong http://orcid.org/0000-0002-2601-5855
Funding for this research was provided by:
Sichuan Cadres Health Care Fund (CGY2016-101)
Collaborative Innovation Center of Sichuan for Elderly Care and Health (YLZBZ1503)
National Natural Science Foundation of China (No. 81601220)
the Project of Science and Technology Bureau of China and Sichuan Province (2017RZ0040)
Article History
Received: 25 February 2018
Accepted: 27 April 2018
First Online: 17 May 2018
Compliance with ethical standards
:
: No competing financial interests exist.
: Approval for the retrospective study was obtained from the research ethics committee of Sichuan University.
: All the participants in our study signed the informed consent form.