[1] Liga Nacl Canc & Inst Cancerol LIGA INCAN, Guatemala City, Central, Guatemala
[2] Washington Univ, Sch Med, Dept Radiat Oncol, St Louis, MO USA
[3] Washington Univ, Global Hlth Ctr, Inst Publ Hlth, St Louis, MO 63110 USA
[4] Washington Univ, Sch Med St Louis, Dept Radiat Oncol, St Louis, MO 63110 USA
[5] Liga Nacl Canc & Inst Cancerol INCAN, Guatemala City, Guatemala
[6] Washington Univ, Div Infect Dis, St Louis, MO 63110 USA
[7] Washington Univ, Inst Publ Hlth, St Louis, MO 63110 USA
[8] Univ Penn, Ctr Global Hlth, Perelman Sch Med, Philadelphia, PA 19104 USA
[9] Washington Univ, Sch Med, Dept Radiat Oncol, St Louis, MO USA
[10] Washington Univ, St Louis, MO 63110 USA
[11] Natl Taiwan Univ, Dept Life Sci, Taipei, Taiwan