Disorders of the Nervous System Caused by Drugs, Toxins, and Chemical Agents, Opiates and Synthetic Analgesic Drugs
Adams & Victors Principles of Neurology Chp 43, pg 1201, Ropper, A.H.,et al, 2014
Illicit Drug-Associated Ischemic Stroke in the Baltimore-Washington Young Stroke Study
Neurol 50:1688-1693, Sloan,M.A.,et al, 1998