Anacak, Y., Ege University School of Medicine, Izmir, Turkey; Zubizarreta, E., International Atomic Energy AgencyVienna, Austria; Zaghloul, M., National Cancer Institute, Cairo University, Cairo, Egypt, Children's Cancer Hospital, Cairo, Egypt; Laskar, S., Tata Memorial Hospital, Mumbai, India; Alert, J., Instituto de Oncología y Radiobiología, Habana, Cuba; Gondhowiardjo, S., Faculty of Medicine, University of Indonesia/Dr Cipto Mangunkusumo National General Hospital, Jakarta, Indonesia; Giselvania, A., Faculty of Medicine, University of Indonesia/Dr Cipto Mangunkusumo National General Hospital, Jakarta, Indonesia; Correa-Villar, R., Centro Infantil Boldrini, Sao Paulo, Brazil; Pedrosa, F., Instituto de Medicina Integral Prof. Fernando Figueira, Recife, Brazil; Dorj, B., National Cancer Centre, Ulaanbaatar, Mongolia; Kamer, S., Ege University School of Medicine, Izmir, Turkey; Howard, S.C., University of Tennessee Health Science Center, Memphis, TN, United States; Quintana, Y., Harvard Medical School, Boston, MA, United States; Ribeiro, R.C., St Jude Children's Research Hospital, Memphis, TN, United States; Rosenblatt, E., International Atomic Energy AgencyVienna, Austria; Hopkins, K., International Atomic Energy AgencyVienna, Austria