1. Department of Bioengineering Rice University Houston Texas USA
2. Basic Health International San Salvador El Salvador
3. Liga Contra el Cáncer de El Salvador San Salvador El Salvador
4. Department of Pathology Medical College of Wisconsin Milwaukee Wisconsin USA
5. Division of Pathology and Laboratory Medicine The University of Texas MD Anderson Cancer Center Houston Texas USA
6. Divisions of Cancer Prevention and Cancer Epidemiology and Genetics National Cancer Institute, National Institutes of Health Rockville Maryland USA
7. Department of Obstetrics and Gynecology Women's Health Institute, Cleveland Clinic Cleveland Ohio USA
8. Department of Gynecologic Oncology and Reproductive Medicine The University of Texas MD Anderson Cancer Center Houston Texas USA