Volume 16, Issue 4, April 2015, Pages 1397-1401
Volume 15, Issue 21, December 2014, Pages 9143-9146
Volume 14, Issue 10, October 2013, Pages 5905-5910
Volume 14, Issue 5, May 2013, Pages 2699-2701
Volume 13, Issue 2, February 2012, Pages 719-724
Volume 13, Issue 1, January 2012, Pages 275-277
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