Longitudinal relationship between psychological distress and multiple substance use: results from a three-year multisite natural-history study of rural stimulant users.
Booth BM, Curran G, Han X, Wright P, Frith S, Leukefeld C, Falck R, Carlson RG. Longitudinal relationship between psychological distress and multiple substance use: results from a three-year multisite natural-history study of rural stimulant users. J Stud Alcohol Drugs. 2010 Mar; 71(2):258-67.