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Submitted on: 14 July 1998.
Revised on: 14 August 1998.
Accepted on: 18 September 1998.
___________________Geriatrie et Psychologie Neuropsychiatrie du Vieillissement
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Submitted on: 06 February 2001.
Revised on: 26 March 2001.
Accepted on: 11 May 2001.
___________________Geriatrie et Psychologie Neuropsychiatrie du Vieillissement
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Submitted on: 29 April 2012.
Revised on: 09 August 2012.
Accepted on: 03 September 2012.
___________________Geriatrie et Psychologie Neuropsychiatrie du Vieillissement
Submitted on: 14 October 2013.
Revised on: 07 December 2013.
Accepted on: 03 February 2014.
___________________Geriatrie et Psychologie Neuropsychiatrie du Vieillissement
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