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Submitted on: 24 February 2000.
Revised on: 20 June 2000.
Accepted on: 03 August 2000.
___________________Endoscopic Ultrasound---LIPPINCOTT WILLIAMS & WILKINS
Submitted on: 28 September 1999.
Revised on: 20 November 1999.
Accepted on: 14 December 1999.
___________________Endoscopic Ultrasound---LIPPINCOTT WILLIAMS & WILKINS
Submitted on: 11 January 2004.
Revised on: 16 February 2004.
Accepted on: 14 March 2004.
___________________Endoscopic Ultrasound---LIPPINCOTT WILLIAMS & WILKINS
Submitted on: 20 March 2007.
Revised on: 11 May 2007.
Accepted on: 26 May 2007.
___________________Endoscopic Ultrasound---LIPPINCOTT WILLIAMS & WILKINS