1. Departments of Clinical Biochemistry and Obstetrics, Naestved Hospital, Naestved, University of Copenhagen, Naestved, Denmark,
2. 3rd Chair and Department of Gynecology, Medical University of Lublin, Lublin, Poland,
3. Department of Obstetrics and Gynecology, University of Milan, Hospital Luigi Sacco, Milan, Italy, and
4. Clínic Institute of Gynecology, Obstetrics and Neonatology, Hospital Clínic-Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Faculty of Medicine-University of Barcelona, Barcelona, Spain