- Correspondence to Dr Hiroyuki Shimada, Department of Preventive Gerontology, Center for Gerontology and Social Science, National Center for Geriatrics and Gerontology, Obu, Aichi 474-8511, Japan;
- Received October 1, 2017
- Revised June 1, 2018
- Accepted June 5, 2018
- First published June 23, 2018.
If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.