1. Department of Obstetrics and Gynecology, Faculty of Medicine Hradec Kralove, Charles University in Prague, Hradec Kralove, Czech Republic,
2. Department of Clinical Immunology and Allergy, Faculty of Medicine Hradec Kralove, University Hospital Hradec Kralove, Hradec Kralove, Czech Republic,
3. Institute of Clinical Biochemistry and Diagnostics, University Hospital Hradec Kralove, Hradec Kralove, Czech Republic,
4. Department of Obstetrics and Gynecology, University Hospital Ostrava, Ostrava, Czech Republic,
5. Department of Perinatology, Medical University of Bialystok, Bialystok, Poland,
6. Department of Obstetrics and Gynecology, Sahlgrenska Academy, Gothenburg University, Gothenburg, Sweden,
7. Department of Genes and Environment, Division of Epidemiology, Norwegian Institute of Public Health, Oslo, Norway, and
8. Biomedical Research Center, University Hospital Hradec Kralove, Hradec Kralove, Czech Republic