[1] Royal Marsden NHS Fdn Trust, London, England
[2] Peter MacCallum Canc Ctr, East Melbourne, Vic, Australia
[3] Univ Melbourne, East Melbourne, Vic, Australia
[4] UCLA Jonsson Comprehens Canc Ctr, Los Angeles, CA USA
[5] Ist Nazl Tumori Fdn G Pascale, Naples, Italy
[6] F Hoffmann La Roche Ltd, Basel, Switzerland
[7] Genentech Inc, San Francisco, CA 94080 USA
[8] Univ Nantes, Nantes, France