- Weijer, C. et al. (2011). Ethical Issues Posed by Cluster Randomized Trials in Health Resarch. Trials, 12, 100.
- McRae, A., Weijer, C. Minik, A. et al. (2011). When is Informed Consent Required in Cluster Randomized Trials? Trials. 12, 202.
- London, A., Taljaard, M., Weijer, C. (2020). Loopholes in the Research Ethics System? Informed Consent Waivers in Cluster Randomized Trials with Individual-Level Intervention. Ethics & Human Research, 42(6).