Multisite effectiveness trials of treatments for substance abuse and co-occurring problems: Have we chosen the best designs?

Edward V. Nunes, Samuel Ball, Robert Booth, Gregory Brigham, Donald A. Calsyn, Kathleen Carroll, Daniel J. Feaster, Denise Hien, Robert L. Hubbard, Walter Ling, Nancy M. Petry, John Rotrosen, Jeffrey Selzer, Maxine Stitzer, Susan Tross, Paul Wakim, Theresa Winhusen, George Woody