1. Department of Emergency Medical Service, Wroclaw Medical University, 50-367 Wroclaw, Poland
2. 2nd Department and Clinic of Gynaecology and Obstetrics, Wroclaw Medical University, 50-556 Wroclaw, Poland
3. 1st Department and Clinic of Gynaecology and Obstetrics, Wroclaw Medical University, 50-556 Wroclaw, Poland
4. Henry JN Taub Department of Emergency Medicine, Baylor College of Medicine, Houston, TX 77030, USA
5. Department of Clinical Research and Development, LUXMED Group, 02-676 Warsaw, Poland