[1] Dana Farber Canc Inst, Boston, MA 02115 USA
[2] Univ Toronto, Princess Space Margaret Hosp, Toronto, PQ, Canada
[3] McGill Univ, Jewish Gen Hosp, Div Hematol, Montreal, PQ H3T 1E2, Canada
[4] McGill Univ, Jewish Gen Hosp, Dept Oncol, Montreal, PQ H3T 1E2, Canada
[5] Univ Hosp Cologne, German Hodgkin Study Grp GHSG, Dept Internal Med 1, Cologne, Germany
[6] Seoul Natl Univ, Seoul, South Korea
[7] Clin Victor Hugo, Ctr Jean Bernard, Le Mans, France
[8] Univ Milan, Fdn IRCCS, Ist Nazl Tumori, Milan, Italy
[9] Univ Hosp Gasthuisberg, B-3000 Leuven, Belgium
[10] Univ Texas Houston, MD Anderson Canc Ctr, Houston, TX 77030 USA
[11] Novartis Pharmaceut Inc, Florham Pk, NJ USA