1. Division of EpidemiologyCollege of Public Health, The Ohio State University Columbus OH
2. Center for Biostatistics, The Ohio State University Columbus OH
3. Division of ResearchKaiser Permanente Oakland CA
4. Division of Gynecologic OncologyCollege of Medicine, The Ohio State University Columbus OH
5. Public Health Sciences Division, Fred Hutchinson Cancer Research Center Seattle WA
6. Division of Cancer Prevention and ControlCollege of Medicine, The Ohio State University Columbus OH