[1] Univ Surrey, Clin & Expt Med, Guildford, Surrey, England
[2] Royal Surrey Cty Hosp, Dept HPB Surg, Guildford, Surrey, England
[3] Univ Surrey, Bioinformat Dept, Guildford, Surrey, England
[4] Harvard Univ, Dept Med, Boston, MA 02115 USA
[5] Royal Surrey Cty Hosp, Histopathol & Mol Biol, Guildford, Surrey, England