RT Article T1 Demographic profiles of smokeless tobacco users in the U.S JF American journal of preventive medicine VO 37 IS 1 SP 29 OP 34 A1 Timberlake, D.S. A1 Huh, Joonsuk 1978- A2 Huh, Joonsuk 1978- LA English YR 2009 UL https://krimdok.uni-tuebingen.de/Record/1912508508 DO 10.1016/j.amepre.2009.03.010