- 2012: Volume 168(1), July 2012
- 2012: Volume 167(2), April 2012
- 2012: Volume 167(1), January 2012
- 2011: Volume 166(2), October 2011
- 2011: Volume 166(1), July 2011
- 2011: Volume 165(2), April 2011
- 2011: Volume 165(1), January 2011
- 2010: Volume 164(2), October 2010
- 2010: Volume 164(1), July 2010
- 2010: Volume 163(2), April 2010
- 2010: Volume 163(1), January 2010
- 2009: Volume 162(2), October 2009
- 2009: Volume 162(1), July 2009
- 2009: Volume 161(2), April 2009
- 2009: Volume 161(1), January 2009
- 2008: Volume 160(2), October 2008
- 2008: Volume 160(1), July 2008
- 2008: Volume 159(2), April 2008
- 2008: Volume 159(1), January 2008
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