[1] Canc Res UK London Res Inst, Gene Express Anal Lab, London WC2A 3LY, England
[2] Canc Res UK London Res Inst, Bioinformat & Biostat Serv, London WC2A 3LY, England
[3] Canc Res UK London Res Inst, High Throughput Screening Facil, London WC2A 3LY, England
[4] Swiss Fed Inst Technol, Inst Mol Syst Biol, Zurich, Switzerland