[1] Inst Canc Res, Sutton, Surrey, England
[2] Christie Hosp NHS Trust, Manchester M20 4BX, Lancs, England
[3] Netherlands Canc Inst, Amsterdam, Netherlands
[4] Kyushu Natl Canc Ctr, Fukuoka, Japan
[5] AstraZeneca R&D, Macclesfield, Cheshire, England
[6] Natl Canc Ctr, Tokyo, Japan