Tommaso Falcone, MD, Cleveland Clinic, Department of Obstetrics and Gynecology, Lerner College of Medicine, Cleveland, Ohio, USA William W. Hurd, MD, MSc, MPH, Department of Obstetrics and Gynecology, University of Alabama, Birmingham, AL, USA; Professor Emeritus, Duke University School of Medicine, Durham, NC, USA Department of Obstetrics and Gynecology, University of Alabama, Birmingham, AL, USA; Professor Emeritus, Duke University School of Medicine, Durham, NC, USA Department of Obstetrics and Gynecology, University of Alabama, Birmingham, AL, USA; Professor Emeritus, Duke University School of Medicine, Durham, NC, USA Department of Obstetrics and Gynecology, University of Alabama, Birmingham, AL, USA; Professor Emeritus, Duke University School of Medicine, Durham, NC, USA Department of Obstetrics and Gynecology, University of Alabama, Birmingham, AL, USA; Professor Emeritus, Duke University School of Medicine, Durham, NC, USA Department of Obstetrics and Gynecology, University of Alabama, Birmin