[1] Newcastle Univ, Ctr Canc, Newcastle Upon Tyne, Tyne & Wear, England
[2] Newcastle Univ, Populat Hlth Sci Inst, Newcastle Upon Tyne, Tyne & Wear, England
[3] Teesside Univ, Sch Social Sci Humanities & Law, Middlesbrough, Cleveland, England
[4] Great North Childrens Hosp, Newcastle Upon Tyne, Tyne & Wear, England
[5] Newcastle Univ, Ctr Canc, Paediat & Adolescent Haematol Oncol, Newcastle Upon Tyne, Tyne & Wear, England