Decrease of (99m)Tc-uptake in autonomous thyroid tissue in Germany since the 1970s. Clinical implications for radioiodine therapy - Gotthardt, M; Stubinger, M; Pansegrau, J; Buchwald, B; Goecke, J; Pfestroff, A; Corstens, FH; Behr, TM (Nuklearmedizin, 2006)