Volume 15, Issue 24, December 2014, Pages 10967-10970
Volume 14, Issue 7, July 2013, Pages 4205-4208
Volume 13, Issue 10, October 2012, Pages 5177-5182
Volume 13, Issue 3, March 2012, Pages 909-914
Volume 13, Issue 1, January 2012, Pages 255-260
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