DIRECT ESTIMATES OF CANCER MORTALITY DUE TO LOW-DOSES OF IONIZING-RADIATION - AN INTERNATIONAL STUDY by Cardis, E, Gilbert, E, Carpenter, L, Howe, G, Kato, I, Lave, E, Armstrong, B, Beral, V, Cowper, G, Douglas, A, ESTEVE, Fix, J, Fry, S, Kaldor, J, Lave, C, Salmon, L, Smith, P, Voelz, G, Wiggs, L