Submitted on: 02 February 1998.
Revised on: 25 February 1998.
Accepted on: 21 March 1998.
___________________AMERICAN JOURNAL OF MEDICAL QUALITY
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Submitted on: 03 October 2003.
Revised on: 02 January 2004.
Accepted on: 13 February 2004.
___________________AMERICAN JOURNAL OF MEDICAL QUALITY
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Submitted on: 24 August 2016.
Revised on: 10 December 2016.
Accepted on: 13 January 2017.
___________________AMERICAN JOURNAL OF MEDICAL QUALITY