Submitted on: 12 January 1998.
Revised on: 10 April 1998.
Accepted on: 15 May 1998.
___________________Egyptian Liver Journal---SPRINGEROPEN
Submitted on: 27 March 2006.
Revised on: 07 June 2006.
Accepted on: 04 August 2006.
___________________Egyptian Liver Journal---SPRINGEROPEN
Submitted on: 12 July 2002.
Revised on: 01 September 2002.
Accepted on: 26 October 2002.
___________________Egyptian Liver Journal---SPRINGEROPEN
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http://reply.papertrans.cn/1/82/8131/8131-35.png
Submitted on: 04 May 2002.
Revised on: 06 August 2002.
Accepted on: 23 September 2002.
___________________Egyptian Liver Journal---SPRINGEROPEN