1. Hipolit Cegielski State University of Applied Sciences , Gniezno , Poland
2. Faculty of Medicine, Collegium Medicum , Cardinal Stefan Wyszyński University , Warsaw
3. Department of Pediatric Dentistry , Poznan University of Medical Sciences , Poznan , Poland
4. Division of Developmental Gynecology and Sexology, Department of Perinatology and Gynecology , Poznan University of Medical Sciences , Poznan , Poland