[1] Addis Ababa Univ, Sch Med, Dept Oncol, Addis Ababa, Ethiopia
[2] Addis Ababa Univ, Sch Med, Dept Radiol, Addis Ababa, Ethiopia
[3] St Paul Hosp Millennium Med Coll, Dept Oncol, Addis Ababa, Ethiopia
[4] Addis Ababa Univ, Sch Publ Hlth, Dept Reprod Hlth & Hlth Serv Management, Addis Ababa, Ethiopia
[5] St Peter Specialized Hosp, Dept Epidemiol, Addis Ababa, Ethiopia
[6] Amer Canc Soc, Dept Surveillance & Hlth Serv Res, Atlanta, GA USA