[1] Martin Luther Univ Halle Wittenberg, Inst Med Epidemiol Biometr & Informat, Magdeburgerstr 8, D-06097 Halle, Germany
[2] Univ Calabar, Canc Registry, Dept Pathol, Calabar, Nigeria
[3] Univ Calabar, Teaching Hosp, Calabar, Nigeria
[4] Univ Bamako, Bamako Canc Registry, Dept Pathol, Bamako, Mali
[5] Univ Malawi, Coll Med, Canc Registry, Blantyre, Malawi
[6] Univ Ibadan, Canc Registry, Ibadan, Nigeria
[7] Univ Ibadan, Coll Med, Ibadan, Nigeria
[8] Natl Hosp Abuja, Abuja, Nigeria
[9] INCTR African Registry Program, African Canc Registry Network, Oxford, England
[10] Univ Oxford, Nuffield Dept Populat Hlth, Oxford, England
[11] Martin Luther Univ Halle Wittenberg, Inst Pathol, Halle, Germany
[12] Martin Luther Univ Halle Wittenberg, Dept Gynaecol, Halle, Germany
[13] Int Agcy Res Canc, Lyon, France