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Jun 04, 2012 4 Statement of changes in beneficial ownership of securities htmlhtml   pdfpdf  
May 23, 2012 4 Statement of changes in beneficial ownership of securities htmlhtml   pdfpdf  
Apr 23, 2012 4 Statement of changes in beneficial ownership of securities htmlhtml   pdfpdf  
Apr 10, 2012 4 Statement of changes in beneficial ownership of securities htmlhtml   pdfpdf  
Apr 06, 2012 4 Statement of changes in beneficial ownership of securities htmlhtml   pdfpdf  
Apr 03, 2012 4 Statement of changes in beneficial ownership of securities htmlhtml   pdfpdf  
Feb 09, 2012 4 Statement of changes in beneficial ownership of securities htmlhtml   pdfpdf  
Jan 30, 2012 4 Statement of changes in beneficial ownership of securities htmlhtml   pdfpdf  
Jan 26, 2012 4 Statement of changes in beneficial ownership of securities htmlhtml   pdfpdf  
Dec 14, 2011 4 Statement of changes in beneficial ownership of securities htmlhtml   pdfpdf  
Dec 13, 2011 4 Statement of changes in beneficial ownership of securities htmlhtml   pdfpdf  
Dec 05, 2011 4 Statement of changes in beneficial ownership of securities htmlhtml   pdfpdf