Randomized, placebo-controlled trial of sertraline and contingency management for the treatment of methamphetamine dependence - Shoptaw, Steven; Huber, Alice; Peck, James; Yang, Xiaowei; Liu, Juanmei; Jeff Dang; Roll, John; Shapiro, Benjamin; Rotheram-Fuller, Erin; Ling, Walter (Drug & Alcohol Dependence, 2006)