Hidalgo-Mazzei, D., Berk, M., Cipriani, A., Cleare, A. J., Florio, A. D., Dietch, D., Geddes, J. R., Goodwin, G. M., Grunze, H., Hayes, J. F., Jones, I., Kasper, S., Macritchie, K., McAllister-Williams, R. H., Morriss, R., Nayrouz, S., Pappa, S., Soares, J. C., Smith, D. J., Suppes, T., Talbot, P., Vieta, E., Watson, S., Yatham, L. N., Young, A. H., & Stokes, P. R. A. (2019). treatment-resistant and multi-therapy-resistant criteria for bipolar depression: consensus definition. British journal of psychiatry, 214, 27–35. http://access.bl.uk/ark:/81055/vdc_100074896460.0x00004e