37. The auditor's opinion relates to whether a material weakness no longer exists at the company because the stated control objective(s) is met. Therefore, if the auditor has been engaged to report on more than one material weakness or on more than one stated control objective, the auditor must evaluate whether he or she has obtained the principal evidence that the control objectives related to each of the material weaknesses identified in management's assertion are achieved. The auditor may, however, use the work of others to alter the nature, timing, or extent of the work he or she otherwise would have performed. For these purposes, the work of others includes relevant work performed by internal auditors, company personnel (in addition to internal auditors), and third parties working under the direction of management or the audit committee that provide information about the effectiveness of internal control over financial reporting.