[1] Ctr R Gauducheau, Nantes, France
[2] Inst Gustave Roussy, Villejuif, France
[3] PIerre Fabre Oncol, Boulogne, France
[4] Princess Margaret Hosp, Toronto, ON M4X 1K9, Canada
[5] Natl Canc Inst, Clin Trial Grp, Kingston, ON, Canada
[6] Univ Alberta Hosp, Edmonton, AB T6G 2B7, Canada
[7] Middlesex Hosp, Dept Thorac Med, London, England
[8] MRC, Clin Trials Unit, London, England