Roberts, C, Strauss, V Y, Kopijasz, S, Gourley, C, Hall, M, Montes, A, Abraham, J, Clamp, A, Kennedy, R, Banerjee, S, Folkes, L K, Stratford, M & Nicum, S 2020, ' Results of a phase II clinical trial of 6-mercaptopurine (6MP) and methotrexate in patients with BRCA-defective tumours ', British Journal of Cancer, vol. 122, no. 4, pp. 483-490 . https://doi.org/10.1038/s41416-019-0674-4, https://doi.org/10.1038/s41416-019-0674-4 Roberts, C, Strauss, V Y, Kopijasz, S, Gourley, C, Hall, M, Montes, A, Abraham, J, Clamp, A, Kennedy, R, Banerjee, S, Folkes, L K, Stratford, M & Nicum, S 2020, ' Results of a phase II clinical trial of 6-mercaptopurine (6MP) and methotrexate in patients with BRCA-defective tumours ', British Journal of Cancer, vol. 122, no. 4, pp. 483-490 . https://doi.org/10.1038/s41416-019-0674-4 British Journal of Cancer