[1] Univ Lyon 1, Ctr Hosp Lyon Sud, Pierre Benite, France
[2] Mem Sloan Kettering Canc Ctr, New York, NY 10021 USA
[3] Univ Med Ctr, Tubingen, Germany
[4] St Louis Hosp, Paris, France
[5] Dnepropetrovsk State Med Ctr, Dnepropetrovsk, Ukraine
[6] Bristol Myers Squibb Co, Wallingford, CT 06492 USA
[7] Bristol Myers Squibb Co, Braine Lalleud, Belgium
[8] Inst Gustave Roussy, Villejuif, France