[1] UCL, MRC, Clin Trials Unit, 90 High Holborn, London WC1V 6LJ, England
[2] Imperial Coll Healthcare NHS Trust, London, England
[3] Chelsea & Westminster NHS Fdn Trust, London, England
[4] Great Ormond St Hosp NHS Fdn Trust, London, England
[5] Guys & St Thomas NHS Fdn Trust, London, England
[6] Kings Coll Hosp NHS Fdn Trust, London, England
[7] Cent & North West London NHS Fdn, Mortimer Market Ctr, London, England
[8] Newham Univ Hosp, London, England
[9] North Middlesex Univ Hosp NHS Trust, London, England
[10] Royal Free London NHS Fdn Trust, London, England
[11] St Georges Univ Hosp NHS Fdn Trust, London, England
[12] Alder Hey Childrens NHS Fdn Trust, Liverpool, Merseyside, England
[13] Heart England NHS Fdn Trust, Birmingham Heartlands, Birmingham, W Midlands, England
[14] Univ Hosp Bristol NHS Fdn Trust, Bristol Royal Infirm, Bristol, Avon, England
[15] Univ Hosp Bristol NHS Fdn Trust, Bristol, Avon, England
[16] Leeds Teaching Hosp NHS Trust, Leeds, W Yorkshire, England
[17] Univ Hosp Leicester NHS Trust, Leicester, Leics, England
[18] North Manchester Gen Hosp, Pennine Acute Hosp NHS Trust, Manchester, Lancs, England
[19] Royal Liverpool & Broadgreen Univ Hosp NHS Trust, Liverpool, Merseyside, England
[20] Blue Sky Trust, Newcastle Upon Tyne, Tyne & Wear, England
[21] Body & Soul, London, England
[22] Faith People, London, England
[23] Positively UK, London, England
[24] Posit Parenting & Children, London, England