1 Department of Obstetrics and Gynecology, University of Michigan, Ann Arbor, Michigan; Program on Women's Healthcare Effectiveness Research (PWHER), Department of Obstetrics and Gynecology, University of Michigan, Ann Arbor, Michigan; Institute for Healthcare Policy and Innovation, University of Michigan, Ann Arbor, Michigan. Electronic address: mmoniz@med.umich.edu.
2 Department of Obstetrics and Gynecology, University of Michigan, Ann Arbor, Michigan; Program on Women's Healthcare Effectiveness Research (PWHER), Department of Obstetrics and Gynecology, University of Michigan, Ann Arbor, Michigan; Institute for Healthcare Policy and Innovation, University of Michigan, Ann Arbor, Michigan.
3 Department of Obstetrics, Gynecology & Reproductive Sciences, University of Pittsburgh, Pittsburgh, Pennsylvania; Department of Obstetrics, Gynecology, & Reproductive Sciences, Magee-Womens Research Institute, University of Pittsburgh, Pittsburgh, Pennsylvania.