Columbia subject headings:
Emigration and immigration--Health aspects--Mexico.
Emigration and immigration--Health aspects--United States.
Emigration and immigration--Health aspects--Venezuela.
Immigrants--Health and hygiene--United States.
Immigrants--Health and hygiene--Venezuela.
Mexicans--Health and hygiene--United States.
Harvard subject headings:
Princeton subject headings:
Immigrants--Health and hygiene--United States.
Mexicans--Health and hygiene--United States.
Mexico--Emigration and immigration--Health aspects.
Public health--Venezuela.
South America--Emigration and immigraiton--Health aspects.
United States--Emigration and immigration--Health aspects.
Venezuela--Emigration and immigration--Health aspects.