"The exclusion of admissible evidence does not constitute reversible error where the evidence `would have been merely cumulative of other evidence of the same nature, which was admitted.'" Houston v. State, 565 So.2d 277, 281 (Ala.Crim.App. 1990) (quoting Ex parte Lawson, 476 So.2d 122, 122 (Ala. 1985)). Therefore, the trial court's error, if any, in finding that the excluded medical records were not properly authenticated was not prejudicial to Jordan, and we affirm the trial court's denial of Jordan's motion for a new trial on this issue.