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Since smoking status was determined based on a one-time questionnaire, there may be significant recall bias and underreporting as well as changes in smoking intensity over time that are not reflected in our estimation of total PY
The filters were placed in glass vials, methanol was added, and they were vortexed for 1 minute, followed by filtration through a 0.22 m filter
However, marijuana use remains illegal at the federal level, which has complicated efforts to research the long-term effects of the drug
Mainstream smoke is the smoke that is released into the air when a cigarette is drawn and inhaled, whereas sidestream smoke is the smoke that is emitted from the end of a burning cigarette (Lynne Eldridge)
Insert a piece of Take a piece of rolling paper and turn it around so the strip of adhesive is facing up and toward you
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