Downward accountability mechanism effectiveness by non-governmental organizations in low- and middle-income countries: A qualitative systematic review - Elizabeth Noble; Dina Moinul; Oumou Khairy Djim Sylla; Sophia Friedmann; Kristen Amick; Nehal Rowhani; Rashi Dua; Nowshin Mannan; Cathleen Seaman; Omobolanle Ayo; Shubhra Pant; Oluwatimilehin Osoko; et al. (PLoS ONE, 2025)