1. Department of Obstetrics and Gynecology, General Hospital Celje , Celje , Slovenia
2. University Department of Gynecology and Perinatology, University Medical Center Maribor , Maribor , Slovenia
3. Department of Gynecology and Obstetrics, Faculty of Medicine, University of Maribor , Maribor , Slovenia
4. National Cervical Cancer Screening Programme and Registry ZORA, Cancer Screening Department, Institute of Oncology Ljubljana , Ljubljana , Slovenia
5. Faculty of Medicine, University of Ljubljana , Ljubljana , Slovenia
6. Department of Pathology and Cytology, General Hospital Celje , Celje , Slovenia