Ge, Ge
Zhang, Yun
Zhang, Yichi
Xu, Zhihui
Zhang, Meixia
Funding for this research was provided by:
National Natural Science Foundation of China (81271019)
Sichuan Province Science and Technology Support Program (2019YJ0129)
National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University (Z2018B22)
Article History
Received: 18 April 2019
Revised: 10 September 2019
Accepted: 15 September 2019
First Online: 16 November 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: This article does not contain any studies with human participants or animals performed by any of the authors.