Tran, N. T., Seuc, A., Tshikaya, B., Mutuale, M., Landoulsi, S., Kini, B., Mbu Nkolomonyi, B., Nyandwe Kyloka, J., Langwana, F., Cuzin-Kihl, A., Kiarie, J., Gaffield, M. E., Yodi, R., & Mashinda Kulimba, D. (2020). effectiveness of post-partum family planning interventions on contraceptive use and method mix at 1 year after childbirth in Kinshasa, DR Congo (Yam Daabo): a single-blind, cluster-randomised controlled trial. Lancet, 8(3), e399–e410. http://access.bl.uk/ark:/81055/vdc_100101588769.0x00000c