1. Division of Endocrinology, Diabetes and Metabolism, Centro Hospitalar Universitário do Porto, Porto, Portugal
2. Division of Nutrition, Centro Hospitalar Universitário do Porto, Porto, Portugal
3. Division of Obstetrics, Centro Hospitalar Universitário do Porto, Porto, Portugal
4. On Behalf of the Pregnancy and Diabetes Study Group of the Portuguese Diabetes Society, Maternidade Bissaya Barreto, Coimbra, Portugal