[1] Martin Luther Univ HalleWittenberg, Klin & Poliklin Gynakol, Halle, Germany
[2] Martin Luther Univ Halle Wittenberg, Inst Epidemiol, Halle, Germany
[3] Martin Luther Univ Halle Wittenberg, Inst Pathol, Halle, Germany
[4] Aira Gen Hosp, Dept Surg, Aira, Ethiopia
[5] Martin Luther Univ Halle Wittenberg, Inst Epidemiol, Klin & Poliklin Gynakol, Halle, Germany