The diagnostic value of PET-CT imaging with the 68 Ga-labelled PSMA ligand HBED-CC in the diagnosis of recurrent prostate cancer - Afshar-Oromieh, Ali; Giesel, Frederik L.; Hadaschik, Boris; Kratochwil, Clemens; Weichert, Wilko; Debus, Jürgen; Haberkorn, Uwe (European journal of nuclear medicine and molecular imaging, 2015)