Epidemiological study of the effects of smoking cigarette on thyroid gland - Gu, X L; Mao, J Y; Shan, Z Y; Teng, X C; Teng, D; Guan, H X; Li, Y S; Yu, X H; Fan, C L; Chong, W; Yang, F; Dai, H; Yu, Y; Li, J; Chen, Y Y; Zhao, D; Yang, R; Jiang, Y Q; Li, C Y; Teng, W P (Zhonghua Liu Xing Bing Xue Za Zhi, 2007)