Disorders of the Nervous System Caused by Drugs, Toxins, and Chemical Agents, Arsenic
Adams & Victors Principles of Neurology Chp 43, pg 1222, Ropper, A.H.,et al, 2014
Risk Factors for Parkinson's Disease
Neurol 43:1693-1697, 16411993., Hubble,J.P.,et al, 1993