using chewing tobacco to quit smoking Smokeless tobacco: Just an issue for blue-collar workers? Is smokeless tobacco safer than

2.8% THC Test and cutoff: Urine tests, 20 ng/mL Results: No participants failed the urine test, with a max of 20 ng/mL

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Moderate Smokers: 6mg and 12mg for those who smoke up to a pack a day, providing a satisfying nicotine hit

Inflamm Bowel Dis (2012) 18:1092100.10.1002/ibd.21864 41 El-TawilAM

and Borland R.: The natural history of quitting smoking: findings from the International Tobacco Control (ITC) Four Country Survey

Second, because the data regarding personal history of smoking in the KoGES were collected only in the beginning of the study and possible changes were not followed up, individuals initially identified as smokers continued to be classified as such, even if they quit smoking afterward