Volume 15, Issue 4, April 2014, Pages 1611-1616
Volume 13, Issue 5, May 2012, Pages 2257-2261
Volume 13, Issue 5, May 2012, Pages 2425-2427
Volume 13, Issue 4, April 2012, Pages 1177-1182
Volume 12, Issue 3, March 2011, Pages 665-669
Volume 6, Issue 3, March 2005, Pages 304-308
Volume 5, Issue 3, March 2004, Pages 253-258
Volume 3, Issue 4, April 2002, Pages 305-311
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