1. Department of Women's and Children's Health; Karolinska Institute; Stockholm Sweden
2. Department of Social Medicine; University of Crete; Heraklion Greece
3. Center for Global Tobacco Control; Harvard School of Public Health; Boston MA USA
4. Florence Nightingale School of Nursing and Midwifery; King's College; London UK
5. Centre for Research in Environmental Epidemiology (CREAL); Barcelona Spain
6. National School of Public Health; Athens Greece