Submitted on: 14 April 1999.
Revised on: 27 May 1999.
Accepted on: 10 June 1999.
___________________aBIOTECH---SPRINGERNATURE
Submitted on: 19 May 2015.
Revised on: 11 September 2015.
Accepted on: 07 October 2015.
___________________aBIOTECH---SPRINGERNATURE
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Submitted on: 21 June 2000.
Revised on: 31 July 2000.
Accepted on: 28 September 2000.
___________________aBIOTECH---SPRINGERNATURE
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Submitted on: 03 July 2004.
Revised on: 08 August 2004.
Accepted on: 22 August 2004.
___________________aBIOTECH---SPRINGERNATURE
Submitted on: 25 November 2013.
Revised on: 05 January 2014.
Accepted on: 23 January 2014.
___________________aBIOTECH---SPRINGERNATURE