Health service utilization and associated factors among fee waiver beneficiaries in Ethiopia: Systematic review and meta-analysis - Bizunesh Fantahun Kase; Hiwot Altaye Asebe; Etsay Woldu Anbesu; Dejen Kahsay Asgedom; Abubeker Alebachew Seid; Abdulkerim Hassen Moloro; Aragaw Asfaw Hasen; Nuru Mohammed Hussen; Molla Getie Mehari; Kassaye Getaneh Arge; Abdu Hailu Shibeshi (PLoS ONE, 2025)