1. Department of Obstetrics and Gynecology, St. Joseph's Hospital, Berlin, Germany;
2. Department of Obstetrics, Vivantes Medical Center Berlin-Neukoelln, Berlin, Germany;
3. Clinic of Diabetology, Kiel, Germany;
4. Department of Diabetology, University of Bonn, Bonn, Germany;
5. Department of Obstetrics and Gynecology, University of California Los Angeles, Harbor UCLA Medical Center, Torrance, California.