Public health insurance and ethnic disparities in maternal health care: The case of vulnerable Mexican women over the last 25 years

1. Serván-Mori, E.
2. Orozco-Núñez, E.
3. Heredia-Pi, I.
4. Armenta-Paulino, N.
5. Wirtz, V.J.
6. Meneses-Navarro, S.
7. Nigenda, G.