1 Department of Obstetrics and Gynecology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA; Leonard Davis Institute of Health Economics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA. Electronic address: Rebecca.feldmanhamm@uphs.upenn.edu.
2 Nuvo Group, Ltd, Tel Aviv, Israel.
3 Department of Obstetrics and Gynecology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA.