Professor Zarko Alfirevic is Professor Emeritus of the University of Liverpool and former director of the Fetal Medicine Unit at Liverpool Women's Hospital, with over thirty years' experience in fetal medicine. He is Coordinating Editor of Cochrane Pregnancy and Childbirth Group and former editor of BJOG: An International Journal of Obstetrics and Gynaecology and Ulstrasound in Obstetrics and Gynaecology. He was awarded the Royal College of Obstetricians and Gynaecologists Academic Award in 2017. Professor Seshadri Suresh is Director of Mediscan Systems, Prenatal Diagnosis and Fetal Therapy Centre with over forty years' experience in the area. He is International Society of Ultrasound in Obstetrics and Gynecology (ISUOG) Ambassador to India and Member of the ISUOG BT Task Force. He is co-author of the Mediscan Manual of Fetal Echocardiography (2001) and is conferred Doctor of Science by the Tamilnadu Dr MGR Medical University. Professor Jonathan Hyett trained in Obstetrics and Gynaecology in the UK and Is Professor of Obstetrics and Gynaecology, Faculty of Medicine, Western Sydney University and Clinical Academic Specialist, Obstetrics and Maternal Fetal Medicine, Liverpool Hospital NSW, Australia. His main interests are in prenatal diagnosis and early prediction for the prevention of adverse pregnancy outcomes. He is a trustee of ISUOG and the Fetal Medicine Foundation UK.