Volume 16, Issue 16, December 2015, Pages 7007-7009
Volume 16, Issue 2, February 2015, Pages 845-852
Volume 13, Issue 9, September 2012, Pages 4725-4732
Volume 6, Issue 3, March 2005, Pages 332-336
Volume 2, Issue 3, March 2001, Pages 215-224
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