1. Department of Anesthesiology and Intensive Care, Regional Specialist Hospital in Olsztyn, Poland
2. Department of Anaesthesiology and Intensive Care, School of Medicine, Collegium Medicum, University of Warmia and Mazury in Olsztyn, Poland
3. Intensive Care and Anesthesiology Department, Independent Public Healthcare Complex in Przasnysz, Poland
4. Clinical Gynecology and Obstetrics Department, Regional Specialist Hospital in Olsztyn, Poland
5. Department of Obstetrics, School of Public Health, Collegium Medicum, University of Warmia and Mazury in Olsztyn, Poland