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. Experimental Research Center ELPEN Pharmaceuticals, S.A. Inc., Co.