[1] Newcastle Univ, Newcastle Upon Tyne, Tyne & Wear, England
[2] Princess Maxima Ctr Pediat Oncol, Utrecht, Netherlands
[3] Epistem Ltd, Manchester, Lancs, England
[4] Newcastle Univ, Northern Inst Canc Res, Dept Pediat Oncol, Wolfson Childhood Canc Res Ctr,Pediat Oncol, Newcastle Upon Tyne, Tyne & Wear, England
[5] Newcastle Univ, Northern Inst Canc Res, Newcastle Upon Tyne, Tyne & Wear, England
[6] Belarusian State Univ, Minsk, BELARUS
[7] Erasmus MC, Dept Pediat Oncol Hematol, Sophia Childrens Hosp, Rotterdam, Netherlands