1. Ob/Gyn and Women's Health Institute, Cleveland Clinic, Cleveland, OH
2. Basic Health International, Pittsburgh, PA; San Salvador, El Salvador
3. Department of Obstetrics and Gynecology, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Third Hospital of Shanxi Medical University, Taiyuan, Shanxi Province, China
4. Ginecología y Obstetricia, Hospital Primero de Mayo, Instituto Salvadoreño del Seguro Social, San Salvador, El Salvador
5. Centro Javeriano de Oncología, Hospital Universitario San Ignacio, Bogotá, Colombia
6. Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, CA
7. Department of Pathology, Medical College of Wisconsin, Milwaukee, WI
8. Divisions of Cancer Prevention and Cancer Epidemiology and Genetics, National Cancer Institute, Rockville, MD