1. Tanner CM. The role of environmental toxins in the etiology of Parkinson’s disease. Trends Neurosci 1984; 12:49-54.
2. Spencer PS, Butterfield PG. Environmental agents and Parkinson’s disease. In: Ellenberg JH, Koller WC, Langston JW, eds. Etiology of Parkinson’s Disease. New York: Marcel Dekker, Inc., 1995: 319–365.
3. National Research Council, Environmental Neurotoxicology. Washington, D.C.: National Academy of Sciences, 1992.
4. Rice DP, Hodgson TA, Kopstein AN. The economic costs of illness: A replication and update. Health Care Financing Review 1985; 7: 68–69.
5. Abou-Donia MB, Wilmarth KR, Jensen KF et al. Neurotoxicity resulting from co-exposure to pyridostigmine bromide, DEET, and permethrin: Implications of Gulf War chemical exposures. J Toxicol Env Health 1996; 48: 35–56.