Volume 14, Issue 12, December 2013, Pages 7427-7431
Volume 14, Issue 5, May 2013, Pages 2931-2936
Volume 13, Issue 11, November 2012, Pages 5785-5790
Volume 13, Issue 11, November 2012, Pages 5849-5855
Volume 13, Issue 8, August 2012, Pages 4025-4030
Volume 13, Issue 5, May 2012, Pages 2225-2228
Volume 12, Issue 10, October 2011, Pages 2697-2704