1. Division of Translational Medical Sciences, School of Medicine, Royal Derby Hospital Centre, University of Nottingham, Derby DE22 3DT, UK
2. Prince Mohammed Bin Abdulaziz Medical City, Ministry of Health, Riyadh 14214, Saudi Arabia
3. University Hospitals of Derby and Burton NHS Foundation Trust, Library & Knowledge Service, Derby DE22 3DT, UK
4. University Hospitals of Derby and Burton NHS Foundation Trust, Obstetrics and Gynaecology, Derby DE22 3DT, UK