Level of exposure to secondhand smoke and perception for its harm in residents of Guangdong Province
WU Wei, XU Yan-jun, SONG Xiu-ling, CAI Qiu-mao, XIAO Jian-peng, LUO Yuan, HE Qun, MA Wen-jun
S China J Prev Med . 2013, (2): 6 -10 .  DOI: 10.13217/j.scjpm.2013.02.006

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