[1] Univ Med Ctr Groningen, Groningen, Netherlands
[2] Siemens Med Solut, Malvern, PA USA
[3] Univ Indonesia, Depok, Indonesia
[4] Azienda USL IRCCS Reggio Emilia, Reggio Emilia, Italy
[5] Univ Hosp, Wurzburg, Germany
[6] Leiden Univ Med Ctr, Leiden, Netherlands
[7] Univ Helsinki, Helsinki, Finland
[8] Helsinki Univ Hosp, Helsinki, Finland
[9] Uppsala Univ, Uppsala, Sweden
[10] European Inst Oncol, Milan, Italy
[11] Ulm Univ, Ulm, Germany