1. Department of Clinical and Experimental Medicine; Linköping University; Linköping Sweden
2. Department of Obstetrics and Gynecology; County Hospital Ryhov; Jönköping Sweden
3. Center for Infectious Medicine; Department of Medicine Huddinge; Karolinska Institutet; Stockholm Sweden
4. Department of Clinical Immunology and Transfusion Medicine; Linköping University; Linköping Sweden
5. Department of Obstetrics and Gynecology; Helsingborg Hospital; Helsingborg Sweden