sentences:  Stein is interested in the psychobiology and management of the anxiety, obsessive-compulsive and related, and traumatic and stress disorders.He has also mentored work in other areas that are of particular relevance to South Africa and Africa, including neuroHIV/AIDS and substance use disorders.Stein's work ranges from basic neuroscience, through clinical investigations and trials, and on to epidemiological and public mental health research.