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Nicotine is the primary factor responsible for tobacco dependence among individuals who smoke. Nicotinic receptors and nicotine-associated metabolism, two significant aspects of nicotine dependence, are influenced by age. To date, however, the relationship between age and nicotine dependence has not been investigated.Cross-sectional.Data were obtained from the national smoking cessation programme...
To examine the association between socio-economic status (SES) and liver cancer mortality among Korean men.Prospective cohort studyData were acquired from a large, prospective cohort study that included 548,530 civil service workers aged 30–59 years who had undergone health examination in 1998 provided by the Korean National Health Insurance System. Information on lifestyle and demographic characteristics...
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