%0 Book Section %T Epidemiology of smokeless tobacco use in the United States and other countries %A McHenry, Gretchen %A Parker, Stephanie J. %A Khoury, Dalia %A Conway, Kevin P. %E Pickworth, Wallace B. %D 2020 %R 10.1016/B978-0-12-818158-4.00003-0 %P 39-71 %B Smokeless Tobacco Products: Characteristics, Usage, Health Effects, and Regulatory Implications %I Elsevier