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BMJOPEN-2013-004273
BMJOPEN-2013-004273
http://dx.doi.org/10.1136/BMJOPEN-2013-004273
Second-hand smoke exposure in different types of venues: before and after the implementation of smoke-free legislation in Guangzhou, China.
P356
Q37591208-A319244D-9CA1-4FE0-8CDB-96FD1CDE78C6
P356
BMJOPEN-2013-004273
http://dx.doi.org/10.1136/BMJOPEN-2013-004273