Within the scope of our review work previously described, we performed the following procedures, among others, on a sample testing basis:  Obtaining an understanding of internal controls,  Interviews with different officials responsible for the information in the Report,  Verification, based on testing, that the data included in the 2012 Sustainability Report is consistent with the documentary evidence reviewed and/or comes from verifiable supporting information sources,  Verification that the financial information included in the 2012 Sustainability Report is derived from accounting records or from financial statements as of December 31, 2012 by another firm of independent auditors.