David R. McCance is Emeritus Professor and Consultant Endocrinologist at the Regional Centre for Endocrinology and Diabetes, Royal Victoria Hospital, and Queen’s University, Belfast. A former Clinical Lead for the Regional Diabetes in Pregnancy Service and chair of the European Diabetes in Pregnancy Study Group, he has over 250 research publications, many of which have influenced national clinical guidelines. Michael Maresh was a Consultant Obstetrician at Manchester University NHS Foundation Trust. A past chairman of the European Diabetes in Pregnancy Study Group, he contributed to NICE guidelines and served as a member of the English National Pregnancy in Diabetes Audit Group, and has had approaching 100 peer-reviewed publications in obstetrics and diabetes management. David A. Sacks is Adjunct Clinical Professor at the Diabetes in Pregnancy Clinic, Department of Obstetrics and Gynecology, University of Southern California, Los Angeles. With over 100 peer reviewed publications, his honors include the Norbert Frankel lecture from the American Diabetes Association and a Lifetime Achievement Award from the North American Diabetes in Pregnancy Study Group.