1. U.S. Census Bureau. Current population survey, March 2000. January 3, 2001. Available at: http://www.census.gov/population/socdemo/foreign/p20-534/tab0301.pdf . Accessed Dec 2011.
2. U.S. Census Bureau. American Community Survey Reports: race and Hispanic origin of the foreign-born population in the United States: 2007. January 2010. Available at: http://www.census.gov/prod/2010pubs/acs-11.pdf . Accessed Dec 2011.
3. U.S Census Bureau. Foreign-born profiles; Profile of selected demographic and social characteristics: 2000, People born in Mexico. 2000a. Available at: http://www.census.gov/population/cen2000/stp-159/STP-159-Mexico.pdf . Accessed Dec 2011.
4. Wallace SP, Gutiérrez VF, Castañeda X. Access to preventive services for adults of Mexican origin. J Immigr Minor Health. 2008;10:363–71.
5. Passel JS. The size and characteristics of the unauthorized migrant population in the U.S. estimates based on the March 2005 current population survey. Pew Hispanic Center. Mar 7, 2006. Available at: http://pewhispanic.org/files/reports/61.pdf . Accessed Dec 2011.