Musa, A. Z., Akinsolu, F. T., Salako, A. O., Abodunrin, O. R., Ola, O. M., Ezechi, O. C. (2025). Evaluating phone call follow-ups in Sub-Saharan Africa: A systematic review and meta-analysis. PLoS ONE. https://doi.org/10.1371/journal.pone.0334894