Corrigendum: A multiple-baseline evaluation of acceptance and commitment therapy focused on repetitive negative thinking for comorbid generalized anxiety disorder and depression (Frontiers in Psychology, (2020), 11, (356), 10.3389/fpsyg.2020.00356) - Ruiz, F.J.; Luciano, C.; Flórez, C.L.; Suárez-Falcón, J.C.; Cardona-Betancourt, V. (Frontiers in Psychology, 2023)