Osanyin, G. E., A. Bankethomas, E. O. Oluwole, A. K. Odeseye, and B. B. Afolabi. “Effects of a MHealth Voice Messaging Intervention on Antenatal Care Utilisation at Primary Care Level in Lagos, Nigeria: A Cluster Randomised Trial”. Journal of Public Health in Africa, vol. 13, no. 3, Sept. 2022, doi:10.4081/jphia.2022.2222.