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Least squares (LS) mean (±SE) of Perceived Health Risk addiction score at baseline, week 2 and week 6 (Panel A). Least squares (LS) mean (±SE) of craving and withdrawal symptoms (Panels B and C) at baseline through week 7. Diamond represents very low nicotine content (VLNC) cigarette alone; square represents nicotine patch (NP) alone; circle represents VLNC + NP.
