Breedvelt, J J F, Brouwer, M E, Harrer, M, Semkovska, M, Ebert, D D, Cuijpers, P & Bockting, C L H 2021, ' Psychological interventions as an alternative and add-on to antidepressant medication to prevent depressive relapse : Systematic review and meta-analysis ', British Journal of Psychiatry, vol. 219, no. 4, pp. 538-545 . https://doi.org/10.1192/bjp.2020.198 Breedvelt, J J F, Brouwer, M E, Harrer, M, Semkovska, M, Ebert, D D, Cuijpers, P & Bockting, C L H 2021, ' Psychological interventions as an alternative and add-on to antidepressant medication to prevent depressive relapse : systematic review and meta-analysis ', British Journal of Psychiatry, vol. 219, no. 4, pp. 538-545 . https://doi.org/10.1192/bjp.2020.198