[1] UNIV WASHINGTON,SCH PUBL HLTH & COMMUNITY MED,DEPT EPIDEMIOL,SEATTLE,WA 98195
[2] UNIV WASHINGTON,SCH PUBL HLTH & COMMUNITY MED,DEPT PEDIAT,SEATTLE,WA 98195
[3] UNIV WASHINGTON,SCH PUBL HLTH & COMMUNITY MED,DEPT OBSTET & GYNECOL,SEATTLE,WA 98195
[4] UNIV WASHINGTON,SCH MED,DEPT MED,SEATTLE,WA 98195