[1] Imperial Coll London, Fac Med, Inst Clin Sci, Dept Mol Sci, London SW7 2AZ, England
[2] MRC London Inst Med Sci, Computat Regulatory Genom, Hammersmith Hosp Campus,Du Cane Rd, London W12 0NN, England
[3] Imperial Coll London, Ctr Integrat Syst Biol & Bioinformat, Struct Bioinformat Grp, Dept Life Sci, London SW7 2AZ, England