1. Department of Clinical Chemistry and Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden
2. Department of Obstetrics and Gynecology, and Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden
3. Equalis AB, Uppsala, Sweden
4. Department of Endocrinology and Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden