Submitted on: 01 May 2004.
Revised on: 02 August 2004.
Accepted on: 16 September 2004.
___________________JMIR mHealth and uHealth---JMIR PUBLICATIONS, INC
Submitted on: 12 August 2014.
Revised on: 07 September 2014.
Accepted on: 30 October 2014.
___________________JMIR mHealth and uHealth---JMIR PUBLICATIONS, INC
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Submitted on: 08 May 2010.
Revised on: 29 June 2010.
Accepted on: 21 August 2010.
___________________JMIR mHealth and uHealth---JMIR PUBLICATIONS, INC
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