1. Department of Obstetrics and Gynecology, University Hospital Ostrava, Ostrava, Czech Republic
2. Department of Obstetrics and Gynecology, University Hospital Hradec Kralove, Charles University, Faculty of Medicine in Hradec Kralove, Hradec Kralove, Czech Republic
3. Department of Clinical Immunology and Allergy, University Hospital Hradec Kralove, Charles University, Faculty of Medicine in Hradec Kralove, Hradec Kralove, Czech Republic
4. Department of Neonatology, University Hospital Ostrava, Ostrava, Czech Republic
5. Department of Pediatrics and Prenatal Cardiology, University Hospital Ostrava, Ostrava, Czech Republic
6. Faculty of Medicine, Institute of Clinical Biochemistry and Diagnostics, University Hospital Hradec Kralove, Charles University, Faculty of Medicine in Hradec Kralove, Hradec Kralove, Czech Republic
7. Biomedical Research Center, University Hospital Hradec Kralove, Hradec Kralove, Czech Republic