Volume 13, Issue 8, August 2012, Pages 3961-3965
Volume 13, Issue 6, June 2012, Pages 2669-2673
Volume 13, Issue 6, June 2012, Pages 2857-2860
Volume 13, Issue 4, April 2012, Pages 1105-1109
Volume 12, Issue 1, January 2011, Pages 95-98
Volume 11, Issue 5, May 2010, Pages 1289-1291
Volume 11, Issue 4, April 2010, Pages 969-974
Volume 11, Issue 2, February 2010, Pages 513-517
Volume 9, Issue 1, January 2008, Pages 53-57
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