[1] Univ Klinikum Essen, Essen, Germany
[2] Univ Duisburg Essen, Essen, Germany
[3] Klinikum Bremen Mitte, Bremen, Germany
[4] Zentrum Moderne Diagnost, Bremen, Germany
[5] Univ Klinikum Carl Gustav, Dresden, Germany
[6] Onkol Gemeinschaftspraxis, Dresden, Germany
[7] Univ Klinikum Munster, Munster, Germany
[8] Hannover Med Sch, Hannover, Germany
[9] Univ Klinikum Jena, Jena, Germany
[10] Klinikum Fulda, Fulda, Germany
[11] Augusta Kranken Anstalt, Bochum, Germany
[12] Univ Klinikum Aachen, Aachen, Germany
[13] Johannes Wesling Klinikum, Minden, Germany
[14] Helios St Johannes Klin, Duisburg, Germany
[15] Helios Univ Klinikum, Wuppertal, Germany
[16] Klinikum Ernst von Bergmann, Potsdam, Germany
[17] Klinikum Darmstadt, Darmstadt, Germany
[18] Univ Klinikum Heidelberg, Heidelberg, Germany
[19] Bruderkrankenhaus St Josef, Paderborn, Germany
[20] Univ Klinikum Leipzig, Leipzig, Germany
[21] Univ Klinikum Schleswig Holstein, Kiel, Germany
[22] Onkologikum, Frankfurt, Germany
[23] Vrije Univ Med Ctr, Amsterdam, Netherlands