Volume 13, Issue 1, January 2012, Pages 289-294
Volume 12, Issue 8, August 2011, Pages 1925-1929
Volume 11, Issue 1, January 2010, Pages 239-246
Volume 10, Issue 6, June 2009, Pages 963-967
Volume 6, Issue 3, March 2005, Pages 282-285
Volume 1, Issue 1, January 2000, Pages 49-55
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