1. Department of Obstetrics and Gynecology, Medical School, University of Zagreb, Sveti Duh Hospital, Zagreb, Croatia
2. Department of Obstetrics and Gynecology, Institut Universitari Dexeus, Barcelona, Spain
3. Department of Physiology, Medical School, University of Zagreb, Zagreb, Croatia
4. Unidad Ecografia, Centro Gutenberg, Malaga, Spain
5. Department of Health, Ministry of Health of Republic of Indonesia, Jakarta, Indonesia