Volume 15, Issue 18, December 2014, Pages 7611-7615
Volume 15, Issue 10, October 2014, Pages 4271-4274
Volume 14, Issue 9, September 2013, Pages 5513-5518
Volume 14, Issue 8, August 2013, Pages 4607-4610
Volume 12, Issue 10, October 2011, Pages 2601-2606
Volume 12, Issue 10, October 2011, Pages 2717-2720
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