Volume 11, Issue 5, May 2010, Pages 1195-1199
Volume 11, Issue 4, April 2010, Pages 1005-1008
Volume 11, Issue 4, April 2010, Pages 1063-1066
Volume 11, Issue 3, March 2010, Pages 781-784
Volume 11, Issue 2, February 2010, Pages 461-464
Volume 8, Issue 2, February 2007, Pages 283-286
Volume 6, Issue 4, April 2005, Pages 541-546
Volume 6, Issue 2, February 2005, Pages 147-152