We searched the electronic databases, PubMed (search date: February 16, 2021), Cochrane Central Register of Controlled Trials (CENTRAL; search date: February 16, 2021), and Embase (search date: February 16, 2021), for RCTs, using appropriate subject headings and relevant search terms (e.g., “bipolar disorder” and “randomized controlled trial;” see Additional file 1: Table S1). When necessary, we contacted the authors of specific studies to clarify additional points.
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