| Filing Date | Form | Description | Filing Group | Downloads |
| 04/04/13 | 6-K | Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act | Current Reports |
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| 04/01/13 | 6-K | Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act | Current Reports |
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| 03/27/13 | 6-K | Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act | Current Reports |
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| 03/26/13 | 6-K | Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act | Current Reports |
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| 03/21/13 | 6-K | Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act | Current Reports |
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| 03/20/13 | 6-K | Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act | Current Reports |
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| 03/15/13 | 6-K | Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act | Current Reports |
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| 02/14/13 | SC 13G/A | An amendment to the SC 13G filing | Other |
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| 02/11/13 | SC 13G | A statement of beneficial ownership of common stock by certain persons | Other |
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| 02/06/13 | SC 13G/A | An amendment to the SC 13G filing | Other |
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