Self-help organizations for alcohol and drug problems: Toward evidence-based practice and policy von Humphreys, Keith, Wing, Stephen, McCarty, Dennis, Chappel, John, Gallant, Lewi, Haberle, Beverly, Horvath, A.Thomas, Kaskutas, Lee Ann, Kirk, Thomas, Kivlahan, Daniel, Laudet, Alexandre, McCrady, Barbara S., McLellan, A.Thomas, Morgenstern, Jon, Townsend, Mike, Weiss, Roger

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