| 2010 | |
| Form 13G February 12, 2010 |
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| Form 13G February 11, 2010 |
|
| Form 13G February 9, 2010 |
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| Form 13G/A February 8, 2010 |
|
| Form 13G January 29, 2010 |
|
| 2009 | |
| Form S-3 August 3, 2009 |
|
| Form 11-K June 26, 2009 |
|
| Form 13G February 13, 2009 |
|
| Form 13G/A February 13, 2009 |
|
| Form 13G February 9, 2009 |
|
| Form 13G February 5, 2009 |
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| 2008 | |
| Form S-3/A December 30, 2008 |
|
| Form S-3 November 26, 2008 |
|
| Form 11-K June 27, 2008 |
|
| 2007 | |
| Form 11-K June 28, 2007 |
|
| Form S-8 March 8, 2007 |
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