[1] Newcastle Upon Tyne Hosp NHS Fdn Trust, Newcastle Fertil Ctr, Int Ctr Life, Newcastle Upon Tyne, Tyne & Wear, England
[2] Newcastle Univ, Int Ctr Life, Inst Genet Med, Newcastle Upon Tyne, Tyne & Wear, England
[3] Newcastle Univ, Royal Victoria Infirm, Sir James Spence Inst Child Hlth, Northern Inst Canc Res, Newcastle Upon Tyne, Tyne & Wear, England
[4] Great North Childrens Hosp, Newcastle Upon Tyne Hosp Trust, Royal Victoria Infirm, Dept Paediat & Adolescent Oncol, Newcastle Upon Tyne, Tyne & Wear, England