1. Department of Obstetrics and Gynecology, University Erlangen, Universitaetsstrasse 21-23, 91054 Erlangen, Germany
2. Second Department of Propedeutic Surgery, Laiko General Hospital, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
3. Nikolaos Christeas Laboratory of Experimental Surgery and Surgical Research, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
4. Renal Transplantation Unit, Laiko General Hospital, 11527 Athens, Greece
5. Department of Cytopathology, Sismanogleio General Hospital, 15126 Athens, Greece
6. Department of Gynecology, Laiko General Hospital, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
7. Obstetric and Gynecologic Clinic, Medical School, Democritus University of Thrace, 68110 Alexandroupolis, Greece