Raymond Powrie MD FRCP FACP, Professor of Medicine, Obstetrics, and Gynecology, The Warren Alpert School of Medicine of Brown University, and Women & Infants Hospital of RI, USAMichael F Greene MD, Professor of Obstetrics & Gynecology, Harvard Medical School and Massachusetts General Hospital, MA, USAWilliam Camann MD, Chief of Obstetric Anesthesia, Brigham and Women's Hospital and Harvard Medical School. He is also the present President of the Society of Obstetric Anesthesiologists and Perinatologists