Volume 15, Issue 5, May 2014, Pages 2013-2020
Volume 13, Issue 11, November 2012, Pages 5653-5657
Volume 13, Issue 5, May 2012, Pages 2057-2061
Volume 13, Issue 5, May 2012, Pages 2349-2354
Volume 13, Issue 2, February 2012, Pages 521-525
Volume 12, Issue 11, November 2011, Pages 3001-3004
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