Funding for this research was provided by:
National Center for Geriatrics and Gerontology (28-34)
Text and Data Mining valid from 2019-11-27
Received: 23 August 2019
Accepted: 16 November 2019
First Online: 27 November 2019
Ethics approval and consent to participate
: The study protocol was approved by the National Center for Geriatrics and Gerontology and was carried out in accordance with their recommendations. All subjects were given a written informed consent in accordance with the Declaration of Helsinki.
: Not applicable.
: The authors declare that they have no competing interests.