Guo-xian Qi

Smoking in China: findings of the 1996 National Prevalence Survey.

J. Samet, Gonghuan Yang, J. Tan, 1999, JAMA.

Smoking in China: findings of the 1996 National Prevalence Survey.

J. Samet, Gonghuan Yang, K. Becker, 1999, JAMA.