[1] Tech Univ Munich, Klinikum Rechts Isar, Nukl Med Klin & Poliklin, D-81675 Munich, Germany
[2] Univ Klinikum Essen, Klin Nukl Med, Essen, Germany
[3] Vanderbilt Univ, Med Ctr, Nashville, TN USA
[4] Univ Klinikum Dresden, Klin & Poliklin Nukl Med, Dresden, Germany
[5] Bundesamt Strahlenschutz, Salzgitter, Germany
[6] Univ Munich, Inst Klin Radiol, D-80539 Munich, Germany
[7] Univ Klinikum Munster, Klin & Poliklin Strahlentherapie Radioonkol, Munster, Germany