Do patients with alcohol dependence respond to placebo? Results from the COMBINE Study. - Weiss RD; O'malley SS; Hosking JD; Locastro JS; Swift R; COMBINE Study Research Group; Weiss, Roger D; O'malley, Stephanie S; Hosking, James D; Locastro, Joseph S; Swift, Robert (Journal of Studies on Alcohol & Drugs, 2008)