1. Medway Fetal and Maternal Medicine Centre, Medway NHS Foundation Trust, Gillingham ME7 5NY, UK
2. Women’s Care Group, Department of Obstetrics, Medway NHS Foundation Trust, Gillingham ME7 5NY, UK
3. Department of Diabetes and Endocrinology, Medway NHS Foundation Trust, Gillingham ME7 5NY, UK
4. Oliver Fisher Neonatal Unit, Medway NHS Foundation Trust, Gillingham ME7 5NY, UK
5. Institute of Medical Sciences, Canterbury Christ Church University, Chatham, Kent ME4 4UF, UK