[1] UCL, Inst Child Hlth, Dev Endocrinol Res Grp, Clin & Mol Genet Unit, London WC1N 1EH, England
[2] Great Ormond St Hosp NHS Trust, Dept Endocrinol, London WC1N 3JN, England
[3] Univ Coll Hosp, Dept Womens Hlth, London NW1 2PG, England
[4] Great Ormond St Hosp NHS Trust, Dept Urol, London WC1N 3JN, England
[5] Great Ormond St Hosp NHS Trust, Dept Psychol, London WC1N 3JN, England
[6] Great Ormond St Hosp NHS Trust, Dept Clin Genet, London WC1N 3JN, England
[7] Univ Coll London Hosp, London W1T 4EU, England
[8] Great Ormond St Hosp NHS Trust, Dept Adolescent Med, London WC1N 3JN, England