1. Jagiellonian University in Krakow, Kraków, Poland
2. Center for Prenatal Diagnostics, Opole, Poland
3. Ultrasound Group Practice, “MWU DOBREUSG”, Kraków, Poland
4. St. Lucas Obstetric Center, Czestochowa, Poland
5. Medical Center Semedica, Kraków, Poland
6. Civis Vita Centrum Medyczne, Toruń, Poland
7. Collegium Medicum, School of Medicine in English, Jagiellonian University, Kraków, Poland