Köhler, Stephan Study supports augmentation with a non-antidepressant agent over combining or switching antidepressants in unipolar depression. [electronic resource] - BMJ evidence-based medicine Aug 2018 - 152-153 p. digital Publication Type: Journal Article; Review ISSN: 2515-4478 Standard No.: 10.1136/bmjebm-2017-110836 doi