Citation:
Thompson, M. E. , Fong, G. T. , Hammond, D. , Boudreau, C. , Driezen, P. , Hyland, A. , Borland, R. , et al. (2006). Methods of the International Tobacco Control (ITC) Four Country Survey. Tobacco Control, 15, iii12–iii18. doi:10.1136/tc.2005.013870