[1] Natl Canc Ctr, Div Med Sci, Singapore, Singapore
[2] St Jude Childrens Res Hosp, Dept Surg, Memphis, TN 38105 USA
[3] KK Womens & Childrens Hosp, Dept Pathol & Lab Med, Singapore, Singapore
[4] KK Womens & Childrens Hosp, Dept Pediat Surg, Singapore, Singapore
[5] KK Womens & Childrens Hosp, Dept Med Oncol, Singapore, Singapore
[6] Singapore Gen Hosp, Dept Pathol, Singapore, Singapore
[7] Agilent Technol, Life Sci Grp, Singapore, Singapore