[1] IBGE, Islamabad, Pakistan
[2] Univ Cambridge, Dept Biochem, 80 Tennis Court Rd, Cambridge CB2 1GA, England
[3] Imperial Coll London, Dept Life Sci, Neurosci Solut Canc Res Grp, South Kensington Campus, London SW7 2AZ, England
[4] Cyprus Int Univ, Biotechnol Res Ctr, Mersin 10, Haspolat, North Cyprus, Turkey
[5] Univ Texas MD Anderson Canc Ctr, Dept Expt Therapeut, Houston, TX 77030 USA