Nelson D Michael, Myatt Leslie
Department of Obstetrics and Gynecology, Washington University School of Medicine, 660 South Euclid Avenue, Mail Stop: 8064-37-1005, St. Louis, MO 63110, USA.
Department of Obstetrics and Gynecology, Oregon Health & Science University, 3181 SW Sam Jackson Park Road, Portland, Oregon 97239-3098, USA.
Obstet Gynecol Clin North Am. 2020 Mar;47(1):xv-xviii. doi: 10.1016/j.ogc.2020.01.001.