Smoking in school-aged adolescents: design of a social network survey in six European countries

1 Institute of Health and Society, Université Catholique de Louvain (UCL), Clos chapelle aux champs 30.05, Brussels, 1200, Belgium

2 Escola Nacional de Saúde Pública, Universidade Nova de Lisboa, Lisbon, Portugal

3 Department of Human Sciences, Society and Health, University of Cassino and Southern Lazio, Cassino, Italy

4 School of Health Sciences, University of Tampere, Tampere, Finland

5 Department of Public Health, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands

6 Institute of Medical Sociology, Martin-Luther University of Halle, Halle, Germany

7 Department of Adolescent Psychiatry, Tampere University Hospital, Tampere, Finland