Informal payments in health facilities in Peru in 2018: analysis of a cross-sectional survey https://www.medrxiv.org/content/10.1101/2023.03.28.23287883
Informal payments in health facilities in Peru in 2018: analysis of a cross-sectional survey https://www.medrxiv.org/content/10.1101/2023.03.28.23287883