| pubmed-article:7721514 | pubmed:abstractText | Although tobacco smoking and alcohol drinking are well-established risk factors for oral cancer, relatively few studies have addressed the comparative effect of filter versus non-filter cigarettes, the nature of the reduction in risk following cessation, and the joint effects of tobacco and alcohol. In addition, recent studies suggest an inverse association of body mass index with oral cancer. We used data from a large, hospital-based case-control study to investigate these issues. | lld:pubmed |
