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
Stroke Assoc. with Addiction to Heroin
JNNP 39:194, Brust,J.C.M.,et al, 1976