Household costs of care in children under five attending primary care in Burkina Faso, Guinea, Mali and Niger: a cross-sectional study nested in the AIRE project. - Agbeci H; Bakyono R; Touré AO; Coulibaly A; Zair Z; Niome M; Hema A; Sawadogo AS; Keita S; Peters Bokol L; Hedible KGB; Neboua D; et al. (BMJ global health, 2025)