TY - JOUR T1 - Institutional Determinants of Informal Payments for Health Services: An Exploratory Analysis across 117 Countries JO - International Journal of Environmental Research and Public Health PY - 2021/11/25 AU - Incaltarau C AU - Horodnic A AU - Williams C AU - Oprea L ED - DO - DOI: 10.3390/ijerph182312421 PB - MDPI AG Y2 - 2024/10/23 ER -