Psychotropic medication non-adherence and its determinants among people living with mental illnesses in Ethiopia: systematic review and meta-analysis study - Gebresilassie Tadesse; Gebremariam Wulie Geremew; Tekletsadik Tekleslassie Alemayehu; Demis Getachew; Digafe Demelash; Setegn Fentahun (BMC Public Health, 2025)