1. School of Public Health, University of Pittsburgh , Pittsburgh, PA 15213, United States
2. Magee Women's Research Institute , Pittsburgh, PA 15213, United States
3. Kaiser Permanente Northern California , Division of Research, Oakland, CA 94588, United States
4. Department of Health Systems Science , Kaiser Permanente Bernard J. Tyson School of Medicine, Pasadena, CA 91101, United States
5. School of Public Health, University of Alabama at Birmingham , Birmingham, AL 35233, United States