[1] St Lukes Med Ctr, Quezon City, Philippines
[2] Inst Canc State Sao Paulo, Sao Paulo, Brazil
[3] Natl Inst Canc Res & Hosp, Dhaka, Bangladesh
[4] Tata Med Ctr, Kolkata, India
[5] Ahmadu Bello Univ, Zaria, Nigeria
[6] Tata Mem Hosp, Mumbai, Maharashtra, India
[7] Kazakh Inst Oncol & Radiol, Alma Ata, Kazakhstan
[8] Univ Tunis El Manar, Fac Med Tunis, Tunis, Tunisia
[9] Nepal Canc Hosp & Res Ctr, Lalitpur, Nepal
[10] Immune Oncol Res Inst, Yerevan, Armenia
[11] Indian Inst Head & Neck Oncol, Indore, India
[12] LACOG Latin Amer Cooperat Oncol Grp, Porto Alegre, RS, Brazil
[13] Inst Oncol & Radiol Serbia, Belgrade, Serbia
[14] Aristide Le Dantec Hosp, Dakar, Senegal
[15] Ocean Rd Canc Inst, Dar Es Salaam, Tanzania
[16] Bir Hosp, Natl Acad Med Sci, Kathmandu, Nepal
[17] Philippine Gen Hosp, Manila, Philippines