The first association between autism and exposure to mercury was the publication of the landmark article Autism, A Unique Type of Mercury Poisoning by Bernard, et. al in 2000. The paper was first published in its entirety and later in the journals Medical Hypothesis and Molecular Psychiatry in 2001. The authors conducted an extensive literature review of mercury and autism and showed that exposure to mercury can give rise to the traits defining or commonly found in individuals with autism spectrum Disorders (ASD).