Betty R. Porter appeals the decision of the District Court 1 to grant summary judgment to the defendants in her diversity medical malpractice action after the District Court determined that Porter had failed to meet the requirements of Minn. Stat. § 145.682 (West 1998) (certification *613 of expert review). Having reviewed de novo the Court’s interpretation and application of § 145.682, see Reimer v. City of Crookston, 326 F.3d 957, 961 (8th Cir. 2003), we agree with the District Court that expert testimony was required and that a psychologist was not qualified to render expert opinions in this case. Accordingly, we affirm, see 8th Cir. R. 47B, and we deny Porter’s motion to supplement the record.

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