| http://www.w3.org/ns/prov#value | - , explained the leader of the study, Professor Jonathan Winickoff, of Massachusetts General Hospital, Boston, United States of America.Toxic particles in cigarette smoke can remain on nearby surfaces long after the cigarette has been put out, meaning the sofa is potentially as problematic as the ashtray itself, Winickoff said.Small children and babies are particularly susceptible because they c
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