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English
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Grøtvedt, Liv; Kvalvik, Liv Grimstvedt; Grøholt, Else-Karin; Akerkar, Rupali; Egeland, Grace M. Development of social and demographic differences in maternal smoking between 1999 and 2014 in Norway. Nicotine & Tobacco Research 2017 ;Volum 19.(5) s. 539-546 FHI UiB
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