Park, J. J. H., Ford, N., Xavier, D., Ashorn, P., Grais, R. F., Bhutta, Z. A., Goossens, H., Thorlund, K., Socias, M. E., & Mills, E. J. (2021). Randomised trials at the level of the individual. The Lancet Global Health, 9(5), e691–e700. https://doi.org/10.1016/S2214-109X(20)30540-4

Dron, L., Taljaard, M., Cheung, Y. B., Grais, R., Ford, N., Thorlund, K., Jahan, F., Nakimuli-Mpungu, E., Xavier, D., Bhutta, Z. A., Park, J. J. H., & Mills, E. J. (2021). The role and challenges of cluster randomised trials for global health. The Lancet Global Health, 9(5), e701–e710. https://doi.org/10.1016/S2214-109X(20)30541-6