[1] Univ Sheffield, Canc Res UK, Child & Family Res Grp, Dept Psychol, Sheffield S10 2TP, S Yorkshire, England
[2] St James Univ Hosp, Canc Res UK Clin Ctr Leeds, Psychosocial & Clin Practice Res Grp, Leeds LS9 7TF, W Yorkshire, England
[3] Univ Leeds, Sch Med, Acad Unit Psychiat & Behav Sci, Leeds LS2 9JT, W Yorkshire, England