Feasibility, acceptability, and effectiveness of group antenatal care on the continuum of care and perinatal outcomes in Sub-Saharan Africa: A systematic review and meta-analysis protocol - Meresa Berwo Mengesha; Tesfaye Temesgen Chekole; Hiluf Ebuy Abraha; Etsay Weldekidan Tsegay; Abadi Hailay Atsbaha; Mihretab Gebreslassie; Zenawi Hagos Gufue (PLoS ONE, 2025)