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Submitted on: 25 February 2007.
Revised on: 13 May 2007.
Accepted on: 05 June 2007.
___________________Frontiers in Chemistry---FRONTIERS MEDIA SA
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Submitted on: 28 November 2017.
Revised on: 18 February 2018.
Accepted on: 18 March 2018.
___________________Frontiers in Chemistry---FRONTIERS MEDIA SA
Submitted on: 06 January 1999.
Revised on: 12 April 1999.
Accepted on: 30 April 1999.
___________________Frontiers in Chemistry---FRONTIERS MEDIA SA
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Submitted on: 30 October 2016.
Revised on: 19 February 2017.
Accepted on: 19 April 2017.
___________________Frontiers in Chemistry---FRONTIERS MEDIA SA
Submitted on: 01 April 2002.
Revised on: 28 June 2002.
Accepted on: 04 August 2002.
___________________Frontiers in Chemistry---FRONTIERS MEDIA SA
Submitted on: 23 June 2005.
Revised on: 09 August 2005.
Accepted on: 17 September 2005.
___________________Frontiers in Chemistry---FRONTIERS MEDIA SA