1. Clinic of Gynaecology, Oncological Gynaecology and Gynaecological Endocrinology, 10th Military Research Hospital and Polyclinic, IPHC, Powstańców Warszawy Str. 5, 85-681 Bydgoszcz, Poland
2. Department of Obstetrics, Female Pathology and Oncological Gynaecology, University Hospital No. 2, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus, University in Toruń, Ujejskiego St. 75, 85-168 Bydgoszcz, Poland
3. NZOZ Centrum Medyczne „Genesis”-Clinic of Infertility Treatment, Waleniowa Str., 24, 85-435 Bydgoszcz, Poland
4. Department of Internal Medicine, Independent Public Health Care, Tadeusza Kościuszki 6, 88-300 Mogilno, Poland
5. Individual Medical Practice Iwona Florczyk, Wesolowskich 5/3, 88-300 Mogilno, Poland
6. Department of General and Oncological Surgery, Specialist Hospital in Włocławek, 49 Wieniecka Street, 87-800 Włocławek, Poland
7. Clinic of Surgery and Oncological Surgery, 10th Military Research Hospital and Polyclinic, IPHC, 85-681 Bydgoszcz, Poland
8. Faculty of Medicine, Medical University in Poznań, 61-701 Poznań, Poland
9. Gynecology, Obstetrics and Pregnancy Pathology Department, Multi-Speciality City Hospital in Bydgoszcz, 19 Szpitalna Street, 85-172 Bydgoszcz, Poland