[1] NSIA LUTH Canc Ctr, Lagos, Nigeria
[2] Univ KwaZulu Natal, Coll Hlth Sci, Dept Radiotherapy & Oncol, Durban, South Africa
[3] Makerere Univ, Kampala, Uganda
[4] Ocean Rd Canc Inst, Dar Es Salaam, Tanzania
[5] Lagos Univ Teaching Hosp, Lagos, Nigeria
[6] Inkosi Albert Luthuli Cent Hosp, Durban, South Africa
[7] Univ Ljubljana, Ljubljana, Slovenia
[8] Johns Hopkins Univ, Dept Radiat Oncol & Mol Radiat Sci, Sch Med, Baltimore, MD USA
[9] Calvary Mater Newcastle, Newcastle, NSW, Australia
[10] UPMC Hillman Canc Ctr, Dept Radiat Oncol, Pittsburgh, PA USA
[11] Univ Penn, Philadelphia, PA USA
[12] Johns Hopkins Univ Hosp, Baltimore, MD USA
[13] Erasmus MC, Dept Radiotherapy, Rotterdam, Netherlands