Submitted on: 16 April 1999.
Revised on: 19 May 1999.
Accepted on: 07 July 1999.
___________________Digital Health---SAGE PUBLICATIONS LTD
Submitted on: 20 April 2013.
Revised on: 01 July 2013.
Accepted on: 30 July 2013.
___________________Digital Health---SAGE PUBLICATIONS LTD
Submitted on: 21 October 2019.
Revised on: 12 February 2020.
Accepted on: 18 March 2020.
___________________Digital Health---SAGE PUBLICATIONS LTD
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Submitted on: 03 January 2015.
Revised on: 27 April 2015.
Accepted on: 04 June 2015.
___________________Digital Health---SAGE PUBLICATIONS LTD
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Submitted on: 14 August 2008.
Revised on: 04 December 2008.
Accepted on: 15 January 2009.
___________________Digital Health---SAGE PUBLICATIONS LTD