1. Oncologic Network, Prevention and Research Institute (ISPRO) Florence Italy
2. Fondazione IRCCS Istituto Nazionale dei Tumori (INT) Milan Italy
3. TobaccoFree Research Institute Ireland (TFRI) Dublin Ireland
4. Istituto di Ricerche Farmacologiche Mario Negri IRCCS (IRFMN) Milan Italy
5. Catalan Institute of Oncology (ICO), L'Hopitalet de Llobregat Spain
6. Bellvitge Biomedical Research Institute (IDIBELL), L'Hopitalet de Llobregat Spain
7. University of Barcelona Barcelona Spain
8. Consortium for Biomedical Research in Respiratory Diseases (CIBER en Enfermedades Respiratorias, CIBERES) Madrid Spain
9. Public Health Agency of Barcelona (ASPB) Barcelona Spain
10. CIBER Epidemiologia y Salud Pública (CIBERESP) Barcelona Spain
11. IIB Sant Pau Barcelona Spain
12. Hospital Universitario La Princesa (IISP) Madrid Spain
13. Polytechnic University of Cartagena (UPCT) Cartagena Spain
14. Faculty of Health Sciences and Sport University of Stirling Stirling UK
15. Hellenic Cancer Society ‐ George D. Behrakis Research Lab (HCS) Athens Greece