In personal injury actions brought by parents on behalf of their minor children alleging that their exposure to a chemical manufactured by defendant caused the children to be born with birth defects, exclusion of two of plaintiffs' experts' opinions and a resulting grant of summary judgment for defendant are affirmed over claims that the trial judge abused his discretion in excluding the opinions because: 1) the experts were sufficiently qualified through their personal study and experience to offer opinions in certain areas in which they lacked formal training; and 2) the experts' methodologies underlying their opinions were verifiable and therefore reliable.