1. Tommy’s National Centre for Miscarriage Research, Institute of Metabolism and Systems Research, College of Medical and Dental Sciences, University of Birmingham , Edgbaston, UK
2. CARE Fertility Birmingham , Edgbaston, UK
3. CARE Fertility Chester , Chester, UK
4. CARE Fertility Sheffield , Sheffield, UK
5. CARE Fertility London , London, UK
6. Institute of Applied Health Research, University of Birmingham , Edgbaston, UK
7. NIHR Birmingham Biomedical Research Centre, University Hospitals Birmingham NHS Foundation Trust and University of Birmingham, Birmingham , UK