Please refer to this study by its ClinicalTrials.gov identifier: NCT00003014
| Porto Alegre Hospital |
| Porto Alegre, Rio Grande do Sul, Brazil, 90035--003 |
| Cancer Care Ontario-London Regional Cancer Centre |
| London, Ontario, Canada, N6A 4L6 |
| Mount Sinai Hospital - Toronto |
| Toronto, Ontario, Canada, M5G 1X5 |
| Princess Margaret Hospital |
| Toronto, Ontario, Canada, M5G 2M9 |
| Hopital Sainte Justine |
| Montreal, Quebec, Canada, H3T 1C5 |
| Maria Hospital |
| Helsinki, Finland, FIN-0-0180 |
| Antoni van Leeuwenhoekhuis |
| Amsterdam, Netherlands, 1066 CX |
| Norwegian Radium Hospital |
| Oslo, Norway, N-0310 |
| Groote Schuur Hospital, Cape Town |
| Cape Town, South Africa, 7925 |
| Royal Preston Hospital |
| Preston, United Kingdom, PR2 9HT |
| Addenbrooke's NHS Trust |
| Cambridge, England, United Kingdom, CB2 2QQ |
| Bradford Hospitals NHS Trust |
| Bradford, England, United Kingdom, BD9 6RJ |
| Bristol Haematology and Oncology Centre |
| Bristol, England, United Kingdom, BS2 8ED |
| Bristol Royal Hospital for Sick Children |
| Bristol, England, United Kingdom, BS2 8BJ |
| Children's Hospital - Birmingham UK |
| Birmingham, England, United Kingdom, B16 8ET |
| Oxford Radcliffe Hospital |
| Oxford, England, United Kingdom, 0X3 9DU |
| Clatterbridge Centre for Oncology NHS Trust |
| Merseyside, England, United Kingdom, L63 4JY |
| Cookridge Hospital |
| Leeds, England, United Kingdom, LS16 6QB |
| Derbyshire Children's Hospital |
| Derby, England, United Kingdom, DE1 3BA |
| Derbyshire Royal Infirmary |
| Derby, England, United Kingdom, DE1 2QY |
| Gloucester Royal NHS Trust - Glouchester Royal Hospital |
| Gloucester, England, United Kingdom, GL1 3NN |
| Guy's and St. Thomas' Hospitals Trust |
| London, England, United Kingdom, SE1 7EH |
| Huddersfield Royal Infirmary |
| Huddersfield, West Yorks, England, United Kingdom, HD3 3EA |
| Kent and Canterbury Hospital |
| Canterbury, England, United Kingdom, CT2 7NR |
| Manchester Children's Hospitals (NHS Trust) |
| Manchester, England, United Kingdom, M27 SHA |
| Middlesex Hospital- Meyerstein Institute |
| London, England, United Kingdom, WIT 3AA |
| Mount Vernon Hospital |
| Northwood, England, United Kingdom, HA6 2RN |
| Newcastle General Hospital |
| Newcastle Upon Tyne, England, United Kingdom, NE4 6BE |
| Newcastle Upon Tyne Hospitals NHS Trust - Freeman Hospital |
| Newcastle-Upon-Tyne, England, United Kingdom, NE7 7DN |
| Norfolk & Norwich Hospital |
| Norwich, England, United Kingdom, NR1 3SR |
| Children's Hospital - Sheffield |
| Sheffield, England, United Kingdom, S10 2TH |
| Portsmouth Hospitals NHS Trust |
| Portsmouth, England, United Kingdom, P03 6AD |
| Princess Royal Hospital |
| Telford, England, United Kingdom, TF6 6TF |
| Royal Devon and Exeter Hospital |
| Exeter, England, United Kingdom, EX2 5DW |
| Royal Free Hospital |
| Hampstead, London, England, United Kingdom, NW3 2QG |
| Royal Marsden Hospital |
| Sutton, England, United Kingdom, SM2 5PT |
| Royal South Hants Hospital |
| Southampton, England, United Kingdom, SO14 0YG |
| Royal Surrey County Hospital |
| Guildford, England, United Kingdom, GU2 5XX |
| Royal Sussex County Hospital |
| Brighton, England, United Kingdom, BN2 5BE |
| University College Hospital |
| London, England, United Kingdom, WC1E 6AU |
| Saint Bartholomew's Hospital |
| London, England, United Kingdom, EC1A 7BE |
| South Tees Acute Hospitals NHS Trust |
| Middlesbrough, Cleveland, England, United Kingdom, TS4 3BW |
| Southampton General Hospital |
| Southampton, England, United Kingdom, SO16 6YD |
| Southend NHS Trust Hospital |
| Westcliff-On-Sea, England, United Kingdom |
| St. Bartholomew's Hospital |
| London, England, United Kingdom, EC1A 7BE |
| St. James's Hospital |
| Leeds, England, United Kingdom, LS9 7TF |
| Royal United Hospital |
| Bath, England, United Kingdom, BA1 3NG |
| University Hospitals of Leicester |
| Leicester, England, United Kingdom, LE1 5WW |
| University of Birmingham |
| Birmingham, England, United Kingdom, B15 2TT |
| Walsall Manor Hospital |
| Walsall, England, United Kingdom, WS2 9PS |
| Walsgrave Hospital |
| Coventry, England, United Kingdom, CV2 2DX |
| Westminster Hospital |
| London, England, United Kingdom, SW1P 2AP |
| Weston Park Hospital |
| Sheffield, England, United Kingdom, S1O 2SJ |
| Royal Belfast Hospital for Sick Children |
| Belfast, Northern Ireland, United Kingdom, BT12 6BE |
| Aberdeen Royal Infirmary |
| Aberdeen, Scotland, United Kingdom, AB25 2ZN |
| Beatson Oncology Centre |
| Glasgow, Scotland, United Kingdom, G11 6NT |
| Ninewells Hospital and Medical School |
| Dundee, Scotland, United Kingdom, DD1 9SY |
| Royal Hospital for Sick Children |
| Edinburgh, Scotland, United Kingdom |
| Royal Infirmary |
| Glasgow, Scotland, United Kingdom, G4 0SF |
| Western General Hospital |
| Edinburgh, Scotland, United Kingdom, EH4 9NQ |
| Llandough Hospital |
| Penarth, Wales, United Kingdom, CF6 1XX |
| Ysbyty Gwynedd |
| Bangor, Wales, United Kingdom, LL57 2PW |