Ebert, D. D., Donkin, L., Andersson, G., Andrews, G., Berger, T., Carlbring, P., Rozenthal, A., Choi, I., Laferton, J. A. C., Johansson, R., Kleiboer, A., Lange, A., Lehr, D., Reins, J. A., Funk, B., Newby, J., Perini, S., Riper, H., Ruwaard, J., Sheeber, L., Snoek, F. J., Titov, N., Ünlü Ince, B., van Bastelaar, K., Vernmark, K., van Straten, A., Warmerdam, L., Salsman, N., & Cuijpers, P. (2016). does Internet-based guided-self-help for depression cause harm? An individual participant data meta-analysis on deterioration rates and its moderators in randomized controlled trials. Psychological medicine, 46(13), 2679–2693. http://access.bl.uk/ark:/81055/vdc_100037391992.0x00001a