| 05.21.13 | 4 | Statement of changes in beneficial ownership of securities | 3,4,5 |  |
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| | 05.14.13 | 4 | Statement of changes in beneficial ownership of securities | 3,4,5 | |
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| | 05.14.13 | 4 | Statement of changes in beneficial ownership of securities | 3,4,5 | |
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| | 05.13.13 | 4 | Statement of changes in beneficial ownership of securities | 3,4,5 | |
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| | 05.13.13 | 4 | Statement of changes in beneficial ownership of securities | 3,4,5 | |
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| | 05.02.13 | 4 | Statement of changes in beneficial ownership of securities | 3,4,5 | |
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| | 05.02.13 | 4 | Statement of changes in beneficial ownership of securities | 3,4,5 | |
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| | 05.02.13 | 4 | Statement of changes in beneficial ownership of securities | 3,4,5 | |
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| | 05.02.13 | 4 | Statement of changes in beneficial ownership of securities | 3,4,5 | |
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| | 05.02.13 | 4 | Statement of changes in beneficial ownership of securities | 3,4,5 | |
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| | 05.02.13 | 4 | Statement of changes in beneficial ownership of securities | 3,4,5 | |
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| | 05.01.13 | 4 | Statement of changes in beneficial ownership of securities | 3,4,5 | |
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| | 04.30.13 | 4 | Statement of changes in beneficial ownership of securities | 3,4,5 | |
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| | 04.30.13 | 4 | Statement of changes in beneficial ownership of securities | 3,4,5 | |
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| | 04.29.13 | 8-K | Report of unscheduled material events or corporate event | Current Reports | |
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| | 04.29.13 | 4 | Statement of changes in beneficial ownership of securities | 3,4,5 | |
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| | 04.29.13 | 4 | Statement of changes in beneficial ownership of securities | 3,4,5 | |
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| | 04.26.13 | 4 | Statement of changes in beneficial ownership of securities | 3,4,5 | |
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| | 04.26.13 | 4 | Statement of changes in beneficial ownership of securities | 3,4,5 | |
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| | 04.26.13 | 4 | Statement of changes in beneficial ownership of securities | 3,4,5 | |
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