1. Department of Genetics, Stanford University School of Medicine, Stanford, CA, USA.
2. Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, CA, USA.
3. Instituto Nacional de Medicina Genómica (INMEGEN), Mexico City, Mexico.
4. Escuela Nacional de Antropología e Historia (ENAH), Mexico City, Mexico.
5. Department of Genetics, Evolution and Environment, University College London, London, UK.
6. Department of Medicine, University of California, San Francisco, CA, USA.
7. Instituto de Investigación en Genética Molecular, Universidad de Guadalajara, Ocotlán, Mexico.
8. Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico.
9. The Brooklyn Hospital Center, Brooklyn, NY, USA.
10. Instituto Nacional de Enfermedades Respiratorias (INER), Mexico City, Mexico.
11. Veterans Caribbean Health Care System, San Juan, Puerto Rico.
12. International Agency for Research on Cancer, Lyon, France.
13. Hospital Infantil de México Federico Gomez, Mexico City, Mexico.
14. National Institute of Environmental Health Sciences, National Institutes of Health, Department of Health and Human Services, Research Triangle Park, NC, USA.
15. Facultad de Química, Universidad Nacional Autónoma de México, Mexico City, Mexico.