Volume 13, Issue 6, June 2012, Pages 2861-2866
Volume 11, Supplement 1, December 2010, Pages 1-5
Volume 11, Supplement 1, December 2010, Pages 41-44
Volume 11, Supplement 1, December 2010, Pages 51-57
Volume 9, Issue 4, April 2008, Pages 581-584