Volume 16, Issue 7, July 2015, Pages 2771-2775
Volume 15, Issue 17, December 2014, Pages 7459-7465
Volume 14, Issue 7, July 2013, Pages 4199-4203
Volume 13, Issue 12, December 2012, Pages 6097-6100
Volume 13, Issue 8, August 2012, Pages 4129-4131
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