1. Heart Of England NHS Foundation Trust, Women's Unit, Solihull HospitalLode Lane, Solihull, West Midlands B91 2JL, UK
2. Department of Obs. & Gynae., Birmingham Women's HospitalMetchley Park Road, Birmingham B15 2TG, UK
3. Birmingham Women's HospitalMetchley Park Road, Birmingham B15 2TG, UK