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
Adverse Effects of Antiretroviral Therapy
Lancet 356:1423-1430, Carr,A. &Cooper, D.A., 2000