"Underneath the formal health care safety net system is an informal, threadbare, and disconnected infrastructure of … free health services - a Third Net - that provides a patchwork of basic care to millions of undocumented and uninsured … migrants across the country." …

This paper describes approaches to the measurement and explanation of income-related inequality and inequity in health … care financing, health care utilization and health and considers the applicability and the feasibility of these methods in … structure of health finance in low-income countries, in particular the heavy reliance on out-of-pocket payments, means that the …