Almost all adolescents in an economically disadvantaged urban population exposed to tobacco smoke Ninety-four percent of adolescents ages 13 to 19 in an economically disadvantaged, largely minority population in San Francisco had measurable levels of a biomarker specific for exposure to tobacco smoke (NNAL). http://ift.tt/eA8V8J
Friday 23 February 2018
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# Latest Science News -- ScienceDaily
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Hello, my name is Jack Sparrow. I'm a 50 year old self-employed Pirate from the Caribbean.
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