BMC Psychiatry, Vol 19, Iss 1, Pp 1-10 (2019) BMC Psychiatry, 19(1):69. BioMed Central BMC Psychiatry BMC Psychiatry, 19(69). BioMed Central van der Flier, F E, Kwee, C M B, Cath, D C, Batelaan, N M, Groenink, L, Duits, P, van der Veen, D C, van Balkom, A J L M & Baas, J M P 2019, ' Cannabidiol enhancement of exposure therapy in treatment refractory patients with phobias: Study protocol of a randomized controlled trial ', BMC Psychiatry, vol. 19, no. 1, 69 . https://doi.org/10.1186/s12888-019-2022-x BMC Psychiatry, 19:69. BMC