Rachel A. Pilliod 1, Amy E. Doss 2, Jonathan M. Snowden 1, Yvonne W. Cheng 3, Jessica M. Page 4, Brian Shaffer 1, Aaron B. Caughey 1
1 Oregon Health & Science University, Department of Obstetrics and Gynecology, Portland, OR
2 Oregon Health and Science University, Department of Obstetrics & Gynecology, Portland, OR
3 Department of Obstetrics, Gynecology and Reproduction, Oregon Health & Science University, San Francisco, CA
4 Oregon Health and Science University, Department of Obstetrics and Gynecology, Portland, OR