1. 2016 Annual Report on the Aging Society 2
2. Aging changes in muscle mass of Japanese;Tanimoto;Jap J Geriatrics,2010
3. http://francebed.co.jp/medical/news/detail.php?id=7
4. http://www.komura.co.jp/products/roza/index.html
5. http://www.kiritsu.co.jp/products/universal/rakuraku/