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Submitted on: 20 May 1998.
Revised on: 01 September 1998.
Accepted on: 05 October 1998.
___________________American Journal of Medicine---ELSEVIER SCIENCE INC
Submitted on: 06 November 2015.
Revised on: 04 February 2016.
Accepted on: 29 March 2016.
___________________American Journal of Medicine---ELSEVIER SCIENCE INC
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Submitted on: 05 August 2011.
Revised on: 09 November 2011.
Accepted on: 05 December 2011.
___________________American Journal of Medicine---ELSEVIER SCIENCE INC
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Submitted on: 06 September 2012.
Revised on: 10 November 2012.
Accepted on: 03 January 2013.
___________________American Journal of Medicine---ELSEVIER SCIENCE INC
Submitted on: 23 April 2010.
Revised on: 09 August 2010.
Accepted on: 04 October 2010.
___________________American Journal of Medicine---ELSEVIER SCIENCE INC
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