Barsema V. Susong

James and Debra Barsema (plaintiffs) petition us to review a decision of the court of appeals. We granted review to determine whether A.R.S. § 12-569 can be constitutionally applied to limit the cross-examination of an expert witness on issues pertaining to possible bias and prejudice. See Rule 23, Ariz.R.Civ.App.P., 17A A.R.S. We have jurisdiction pursuant to Ariz. Const. art. 6, § 5(3) and A.R.S. § 12-120.24.