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A cross-sectional study on levels of second-hand smoke in restaurants and bars in five cities in China.
Liu, R L 1; Yang, Y 2; Travers, M J 3; Fong, G T 4,5; O'Connor, R J 3; Hyland, A 3; Li, L 6; Nan, Y 2; Feng, G Z 2; Li, Q 4; Jiang, Y 2
19(Suppl_2) Supplement 1:i24-i29, October 2010.
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