[1] Uniklin Koln, Innere Med 1, Cologne, Germany
[2] German Hodgkin Study Grp GHSG, Cologne, Germany
[3] Uniklin Koln, Abt Nukl Med, Cologne, Germany
[4] Uniklin Koln, Abt Strahlentherapie, Cologne, Germany
[5] Bern Univ Hosp, Inselspital, Bern, Switzerland
[6] Oncol Inst Southern Switzerland, Med Onkol, Bellinzona, Switzerland
[7] Swiss Grp Clin Canc Res, Bern, Switzerland