1. MRC Clinical Trials Unit at UCL; Meta-analysis Group; Aviation House 125 Kingsway London UK WC2B 6NH
2. Gustave Roussy Cancer Campus; Plateforme LNCC de Méta-analyse en Oncologie et Service de Biostatistique et d’Epidémiologie; Villejuif France
3. University of York; Centre for Reviews and Dissemination; York UK YO10 5DD
4. Gustave Roussy Cancer Campus; Département de Radiothérapie; Villejuif France
5. Gustave Roussy Cancer Campus; Département de Médecine; 39, rue Camille Desmoulins Villejuif France 94805
6. MRC Clinical Trials Unit at UCL; Cancer Division; London UK
7. Karolinska Institutet; Stockholm Sweden
8. University of Bristol; School of Social and Community Medicine; Canynge Hall 39 Whatley Road Bristol UK BS8 2PS
9. University of Texas Southwestern Medical Center; Department of Medicine; 5323 Harry Hines Blvd Rm. G5.210 Dallas Texas USA 75390-9030
10. University Hospital,; Ghent Belgium
11. Cancer Research UK; London UK
12. Sahlgrenska Academy; Gothenberg Sweden
13. Integrated Centers of Oncology R Gauducheau; St Herblain France
14. Institute of Development, Aging and Cancer, Tohoku University; Sendai Japan
15. Tokyo Medical University; Tokyo Japan
16. Montefi ore Medical Center; New York USA
17. Chiba Cancer Center; Chiba City Japan
18. Helsinki University Central Hospital; Pulmonary Department; PO Box 340 Haartmaninkatu Helsinki Finland FIN-00290 HUS
19. Osaka Medical Center for Cancer and Cardiovascular Diseases; Osaka Japan
20. University of Texas MD Anderson Cancer Center; Houston Texas USA
21. Memorial Sloan-Kettering Cancer Center; New York USA
22. Cook County Hospital; Chicago Illinois USA
23. Policlinico Tor Vergata, University; Roma Italy
24. Cedars Sinai Medical Centre, Samuel Oschin Comprehensive Cancer Institute; Los Angeles California USA
25. Catalan Institute of Oncology, Hospital Germans Trias i Pujol; Barcelona Spain
26. S. Luigi Hospital; Turin Italy
27. Queen’s University, NCIC Clinical Trials Group; Kingston Ontario Canada
28. Princess Margaret Cancer Centre; Toronto Canada
29. European Organisation for Research and Treatment of Cancer; Data Center; Avenue E Mounier 83 - Bte 11 Brussels Belgium 1200
30. Suita Saiseikai Hospital; Suita Japan
31. University of Occupational and Environmental Health; Chest Surgery (Second Department of Surgery); Iseigaoka 1-1 Yahata-nishi-ku Kitakyusyu Fukuoka Japan 8078555
32. Mario Negri Institute; Laboratorio di Epidemiologia Clinica; Via Eritrea 62 Milano Milano Italy 20157
33. Glenfield Hospital; Leicester UK
34. Sun Yat-Sen University Cancer Center; Guangzhou China