[1] Univ Rochester, Sch Med & Dent, Rochester, NY USA
[2] Weill Cornell Med, Dept Radiat Oncol, New York, NY USA
[3] Stellenbosch Univ, Stellenbosch, South Africa
[4] Korle Bu Teaching Hosp, Accra, Ghana
[5] Henry Ford Hlth Syst, Detroit, MI USA
[6] H Lee Moffitt Canc Ctr & Res Inst, Tampa, FL USA
[7] Wayne State Univ, Dept Radiat Oncol, Sch Med, Barbara Ann Karmanos Canc Inst, Detroit, MI 48202 USA
[8] Univ Calif Los Angeles, Sch Med, Los Angeles, CA USA
[9] Univ Penn, Dept Radiat Oncol, Philadelphia, PA 19104 USA