We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleEffects of smoking and genotype on the PSR index of periodontal disease in adults aged 18-49.AuthorsPolk DE; Wang X; Feingold E; Shaffer JR; Weeks DE; Weyant RJ; Crout RJ; McNeil DW; Marazita MLPublicationInternational journal of environmental research and public health, 2012, Vol 9, Issue 8, p2839ISSN1660-4601Publication typearticleDOI10.3390/ijerph9082839