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Submitted on: 16 April 2012.
Revised on: 26 July 2012.
Accepted on: 17 September 2012.
___________________Geriatrics & Gerontology International
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Submitted on: 13 October 2008.
Revised on: 20 November 2008.
Accepted on: 03 December 2008.
___________________Geriatrics & Gerontology International
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Submitted on: 31 October 2005.
Revised on: 29 January 2006.
Accepted on: 01 March 2006.
___________________Geriatrics & Gerontology International
Submitted on: 10 April 2007.
Revised on: 17 June 2007.
Accepted on: 15 July 2007.
___________________Geriatrics & Gerontology International