[1] Laikon Gen Hosp, Dept Emergency Surg, Athens, Greece
[2] Natl & Kapodistrian Univ Athens, Sch Med, NS Christeas Lab Expt Surg & Surg Res, Athens, Greece
[3] Sotiria Gen Hosp, Dept Surg, Athens, Greece
[4] Laikon Gen Hosp, Dept Radiol, Athens, Greece
[5] Democritus Univ Thrace, Dept Obstet & Gynecol, Alexandroupolis, Greece
[6] Natl & Kapodistrian Univ Athens, Sch Med, Laiko Gen Hosp, Dept Propedeut Internal Med 1, Athens, Greece
[7] Natl & Kapodistrian Univ Athens, Sch Med, Laiko Gen Hosp, Dept Propedeut Surg 2, Athens, Greece
[8] Univ Hosp Alexandroupolis, Democritus Univ Thrace, Surg Dept 1, Alexandroupolis, Greece
[9] Sismanogleio Gen Hosp, Dept Cytopathol, Athens, Greece
[10] Univ Erlangen Nurnberg, Dept Obstet & Gynecol, Erlangen, Germany