Radiation damage detected by diferent cytogenetic endpoints in professional workers exposed to low level ionizing radiation - Sakamoto-Hojo, Elza Tiemi; Cardoso, R S; Peitl, P; Takahashi-Hyodo, S A; Ghilardi Netto, Thomaz (Satellite Meeting ICEM 1997-Cancer and Genetic Risk Assessment : Low Dose-effect Studies, 1997)