Powers, Mark B Disentangling the effects of safety-behavior utilization and safety-behavior availability during exposure-based treatment: a placebo-controlled trial. [electronic resource] - Journal of consulting and clinical psychology Jun 2004 - 448-54 p. digital Publication Type: Clinical Trial; Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't ISSN: 0022-006X Standard No.: 10.1037/0022-006X.72.3.448 doi Subjects--Topical Terms: AdolescentAdultFemaleHumansMaleMiddle AgedPhobic Disorders--therapySafety