Tricyclic antidepressants versus 'active placebo', placebo or no intervention for adults with major depressive disorder: a protocol for a systematic review with meta-analysis and Trial Sequential Analysis. - Jørgensen, Caroline Kamp; Juul, Sophie; Siddiqui, Faiza; Barbateskovic, Marija; Munkholm, Klaus; Hengartner, Michael Pascal; Kirsch, Irving; Gluud, Christian; Jakobsen, Janus Christian (Systematic Reviews, 2021)