1. Department of Obstetrics & Gynecology, Mesologi County Hospital, Etoloakarnania, Greece
2. Department of Obstetrics & Gynecology, Aretaieion Hospital, Athens University, Attiki, Greece
3. Department of Surgery, Ippokrateion General Hospital, Athens University, Attiki, Greece
4. Department of Biologic Chemistry, Athens University, Attiki, Greece
5. Experimental Research Centre ELPEN Pharmaceuticals, S.A. Inc., Co., Attiki, Greece