Tobacco use: The poor
Iglesias, R.M., Jha, P., Pinto, M. et al. 2007
Mao, Z., Sung, H.Y., Hu, T.W. et al. 2006
Liu, Y., Rao, K., Hu, T.W. et al. 2006
Kinh, H.V., Ross, H., Levy, D.T. et al. 2006
Kinh, H.V., Ross, H., Levy, D.T. et al. 2006
Rock, V.J., Malarcher, A., Kahende, J.W. et al. 2006
Kyaing, N.N., Perucic, A.M., Rahman, K. 2005
Fukuda, Y., Nakamura, K., Takano, T. 2005