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Submitted on: 16 September 1998.
Revised on: 10 November 1998.
Accepted on: 23 November 1998.
___________________Geriatrics & Gerontology International
Submitted on: 23 November 1999.
Revised on: 11 February 2000.
Accepted on: 05 March 2000.
___________________Geriatrics & Gerontology International
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Submitted on: 07 July 2001.
Revised on: 15 August 2001.
Accepted on: 05 September 2001.
___________________Geriatrics & Gerontology International
Submitted on: 24 March 2015.
Revised on: 04 May 2015.
Accepted on: 15 June 2015.
___________________Geriatrics & Gerontology International
Submitted on: 20 May 2017.
Revised on: 29 July 2017.
Accepted on: 24 August 2017.
___________________Geriatrics & Gerontology International
Submitted on: 04 August 2019.
Revised on: 27 September 2019.
Accepted on: 07 November 2019.
___________________Geriatrics & Gerontology International
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