“…The prevalence of daily smokers in the adult Greenlandic population is 66% (and decreasing) ( 18 ), while this number in Denmark is 21% ( 19 ) and could account, in part, to the higher rates of PC among the Greenlandic population. As an effect of the decreasing use of tobacco smoking in both countries ( 18 , 20 ), it is likely that a lower number of smoking-related PC will be observed in future years. However, the cessation of tobacco smoking will have to last for at least 10 years, before a reduced risk will be present ( 15 ).…”