Longnecker MP, Hoffman HJ, Klebanoff MA, Brock JW, Zhou H, Needham L, Adera T, Guo X, Gray KA. In utero exposure to polychlorinated biphenyls and sensorineural hearing loss in 8-year-old children. Neurotoxicol Teratol. 2004 Sep-Oct; 26(5):629-37.