Bid Kumar is a Consultant Obstetrician and Gynaecologist at Wrexham Maelor Hospital, Honorary Lecturer at Cardiff University, and Honorary Senior Lecturer in the School of Healthcare Studies at Bangor University.
Zarko Alfirevic is Professor of Fetal and Maternal Medicine and consultant obstetrician at Liverpool Women's Hospital and Head of Department of Women's and Children's Health at the University of Liverpool, Liverpool.