Volume 14, Issue 3, March 2013, Pages 2019-2022
Volume 14, Issue 2, February 2013, Pages 909-913
Volume 13, Issue 9, September 2012, Pages 4453-4458
Volume 13, Issue 8, August 2012, Pages 3589-3593
Volume 13, Issue 6, June 2012, Pages 2949-2953
Volume 13, Issue 3, March 2012, Pages 1049-1052
Volume 10, Issue 5, May 2009, Pages 789-792