Performance and outcome measurement in substance abuse and mental health programs : hearing before the Subcommittee on Substance Abuse and Mental Health Services of the Committee on Health, Education, Labor, and Pensions, United States Senate, One Hundred Eighth Congress, second session, on examining performance and outcome measurement in substance abuse and mental health programs, focusing on the mission of the Substance Abuse and Mental Health Services Administration to build resilience and facilitate recovery, July 20, 2004.