[1] Univ Parma, Parma, Italy
[2] Hygeia Hosp, Athens, Greece
[3] NN Blochin Russian Oncol Res Ctr, Moscow, Russia
[4] Dokuz Eylu Univ, Med Fac, Izmir, Turkey
[5] Bucharest Oncol Inst, Bucharest, Romania
[6] Hosp Maria Ferrer, Buenos Aires, DF, Argentina
[7] Univ Hosp Brno, Brno, Czech Republic
[8] ISSSTE, Hosp Noviembre Ctr Medico, Mexico City, DF, Mexico
[9] Meir Sapir Med Ctr, Kefar Sava, Israel
[10] Univ Hosp, Ghent, Belgium