Institution: | 1. Fetal Medicine Department, Birmingham Women's Hospital, Metchley Park Road, Birmingham B15 2TG, USA;2. West Midlands Perinatal Institute, St Chad's Court, 213 Hagley Road, Birmingham B16 9RG, USA;3. Department of Clinical Genetics, Birmingham Women's Hospital, Metchley Park Road, Birmingham B15 2TG, USA |