References
- Kessler , R. C. , Nelson , C. B. , McGonagle , K. A. , Edlund , M. J. , Frank , R. G. and Leaf , P. J. 1996 . The epidemiology of co-occurring addictive and mental disorders: implications for prevention and service utilization . Am J Orthopsychiatry , 66 : 17 – 31 .
- Regier , D. A. , Farmer , M. E. Rae , D. S. 1990 . Comorbidity of mental disorders with alcohol and other drug abuse . JAMA , 264 : 2511 – 18 .