ANNAPOLIS, Md. - The Maryland Court of Appeals on Sept. 24 affirmed a decision that a circuit court erred when it applied the improper test in determining whether an expert's methodologies and theories in relation to mold exposure and illness are generally accepted in the relevant scientific community, finding that his testimony must be excluded (Montgomery Mutual Insurance Co. v. Josephine Chesson, et al., No. 97, September Term 2012, Md. App.).