1. Queen Mary's Hospital for Children; Wrythe Lane Carshalton UK SM5 1AA
2. Royal Alexandra Children's Hospital; The Royal Alexandra Hospital for Sick Children Easten Road Brighton Sussex UK BN2 5BE
3. Clinical Trials Unit; Medical Research Unit; Other Diseases Group 222 Euston Road London UK NW1 2DA
4. Newcastle upon Tyne NHS Trust; Paediatrics; 3 rd Floor, Doctors Residence, Royal Victoria Infirmary Queen Victoria Road Newcastle upon Tyne Tyne and Wear UK NE1 4LP