MEMORANDUM **
Kari Kilian appeals from the judgment and award of attorney’s fees in her suit against Equity Residential Properties Trust and Equity Residential Properties Management Corporation (collectively “Equity”).1 The facts are known to the parties and will not be repeated here.
I
Kilian first claims that the district court abused its discretion by excluding the testimony of three of her expert witnesses: Dr. Michael Gray, Dr. Kaye Kilburn, and David Rueckert. The district court, however, properly assessed “whether the reasoning or methodology underlying the testimony [was] scientifically valid and ... whether that reasoning or methodology properly [could] be applied to the facts in issue.” Daubert v. Merrell Dow Pharm., Inc., 509 U.S. 579, 592-93, 113 S.Ct. 2786, 125 L.Ed.2d 469 (1993).
First, the district court had adequate justification for concluding that Dr. Gray’s testimony was not scientifically valid. Dr. Gray used various tests in forming his opinion that even Dr. Kilburn, another of Kilian’s experts, stated were useless in detecting exposure to mycotoxins. In addition, the district court heard testimony that Dr. Gray does not follow the scientific method and that his practices are seldom used by others in his field. See id. at 593-94, 113 S.Ct. 2786 (indicating that general *540acceptance in the field of the method used to collect data aids in the admissibility of the scientific data collected).
Second, the district court had ample justification for questioning the scientific validity of Dr. Kilburn’s testimony. His opinion was developed solely for purposes of litigation, see Daubert v. Merrell Dow Pharm., Inc., 43 F.3d 1311, 1318-19 (9th Cir.1995), and he failed to review Kilian’s medical records before concluding that she suffered from epileptic seizures—a diagnosis independently ruled out by a number of specialists. The district court had reason to question his methodology because he discarded the generally accepted normative standards for his battery of diagnostic tests and created his own, making it impossible to compare his results with the results of other physicians. Moreover, Dr. Kilburn’s testimony does not “fit” the issue of causation; he conceded that his tests indicate only impairment and not causation. See id. at 1320.
Third, there are similar problems with the testimony of Reuckert, Kilian’s industrial hygienist. Reuckert testified that he never tested Kilian’s apartment for myeotoxins, and he conceded that the airborne levels of mold in her apartment were all within normal levels. He nevertheless claimed that the apartment was contaminated with mold. Several of Equity’s experts, however, questioned the validity of Reuckert’s methodology, specifically, his use of vacuum samples to extrapolate past air levels of mold.
Thus, on the basis of the evidence before the district court, we cannot say that exclusion of these three experts was manifestly erroneous. See Nadell v. Las Vegas Metro. Police Dep’t, 268 F.3d 924, 927-28 (9th Cir.2001).
II
Kilian next claims that the district court erred by finding that she failed to prove causation. We note that Kilian produced no evidence that her apartment ever contained myeotoxins, and Equity’s experts testified that the airborne mold levels in the apartment were well within normal ranges. Additionally, many of Kilian’s doctors concluded that her problems were most likely psychological, not organic. The district court’s finding was not clearly erroneous.2 Jones v. United States, 127 F.3d 1154, 1156 (9th Cir.1997).
III
Kilian also challenges the district court’s award of attorney’s fees, claiming that Arizona Revised Statutes § 12-341.01 does not apply to her claim. But claims brought under Arizona Revised Statute § 33-1324 necessarily require a contract between a landlord and a tenant and therefore qualify as an “action arising out of a contract.” See Marcus v. Fox, 150 Ariz. 333, 723 P.2d 682, 684 (1986) (holding that an award of fees is appropriate “ ‘as long as the cause of action in tort could not exist but for the breach of the contract’ ” (quoting Sparks v. Republic Nat’l Life Ins. Co., 132 Ariz. 529, 647 P.2d 1127, 1141 (1982))). Thus, attorney’s fees may properly be awarded in § 33-1324 suits.
As a fallback, Kilian argues that the award of attorney’s fees was improper because of the hardship it would impose on her. The district court made specific findings with regard to the factors listed in Associated Indemnity Corp. v. Warner, *541143 Ariz. 567, 694 P.2d 1181, 1184 (1985), and Kilian did not argue or present evidence of hardship in her opposition to Equity’s application to the district court. The district court’s award did not exceed the bounds of reason and was therefore not an abuse of discretion. See id. at 1185.
The decision of the district court is AFFIRMED.