Funding for this research was provided by:
National Institute of Geriatrics, Rheumatology and Rehabilitation
Article History
Received: 4 November 2018
Revised: 30 December 2018
Accepted: 7 January 2019
First Online: 27 February 2019
Compliance with ethical standards
: All procedures were performed according to Helsinki Declaration. The approval of the Bioethics Committee of National Institute of Geriatrics, Rheumatology, and Rehabilitation was obtained.
: None.