Disorders of the Nervous System Caused by Drugs, Toxins, and Chemical Agents, Botulism
Adams & Victors Principles of Neurology Chp 43, pg 1218, Ropper, A.H.,et al, 2014
Eye Movement Abnormalities in Systemic Lupus Erythematosus
Arch Neurol 52:1145-1149, Keane,J.R., 1995