1. Congenital Anomaly Register for Oxfordshire, Berkshire and
Buckinghamshire, National Perinatal Epidemiology Unit, University of Oxford, Old Road
Campus, Oxford, OX3 7LF
2. West Midlands Congenital Anomaly Register, West Midlands
Perinatal Institute, Crystal Court, Birmingham, B6 5RQ
3. Northern Congenital Abnormality Survey, Institute of Health and
Society, Newcastle University, Richardson Road, Newcastle upon Tyne, NE2 4AX
4. Wessex Antenatally Detected Anomalies Register (WANDA), Wessex
Clinical Genetics Service, Princess Anne Hospital, Southampton, SO16 5YA
5. East Midlands and South Yorkshire Congenital Anomaly Register,
University of Leicester, 22-28 Princess Road West, Leicester, LE1 6TP