Tobacco-related disease mortality among men who switched from cigarettes to spit tobacco
S Jane Henley, Cari J Connell, Patricia Richter, Corinne Husten, Terry Pechacek, Eugenia E Calle, Michael J Thun
Tobacco Control Feb 2007, 16 (1) 22-28; DOI: 10.1136/tc.2006.018069